diff --git a/src/Microsoft.AspNet.Mvc.ApiExplorer/ApiDescriptionGroupCollectionProvider.cs b/src/Microsoft.AspNet.Mvc.ApiExplorer/ApiDescriptionGroupCollectionProvider.cs
index df756f1390..4cab75274c 100644
--- a/src/Microsoft.AspNet.Mvc.ApiExplorer/ApiDescriptionGroupCollectionProvider.cs
+++ b/src/Microsoft.AspNet.Mvc.ApiExplorer/ApiDescriptionGroupCollectionProvider.cs
@@ -10,7 +10,7 @@ namespace Microsoft.AspNet.Mvc.ApiExplorer
     /// <inheritdoc />
     public class ApiDescriptionGroupCollectionProvider : IApiDescriptionGroupCollectionProvider
     {
-        private readonly IActionDescriptorsCollectionProvider _actionDescriptorCollectionProvider;
+        private readonly IActionDescriptorCollectionProvider _actionDescriptorCollectionProvider;
         private readonly IApiDescriptionProvider[] _apiDescriptionProviders;
 
         private ApiDescriptionGroupCollection _apiDescriptionGroups;
@@ -19,13 +19,13 @@ namespace Microsoft.AspNet.Mvc.ApiExplorer
         /// Creates a new instance of <see cref="ApiDescriptionGroupCollectionProvider"/>.
         /// </summary>
         /// <param name="actionDescriptorCollectionProvider">
-        /// The <see cref="IActionDescriptorsCollectionProvider"/>.
+        /// The <see cref="IActionDescriptorCollectionProvider"/>.
         /// </param>
         /// <param name="apiDescriptionProviders">
         /// The <see cref="IEnumerable{IApiDescriptionProvider}}"/>.
         /// </param>
         public ApiDescriptionGroupCollectionProvider(
-            IActionDescriptorsCollectionProvider actionDescriptorCollectionProvider,
+            IActionDescriptorCollectionProvider actionDescriptorCollectionProvider,
             IEnumerable<IApiDescriptionProvider> apiDescriptionProviders)
         {
             _actionDescriptorCollectionProvider = actionDescriptorCollectionProvider;
@@ -47,7 +47,7 @@ namespace Microsoft.AspNet.Mvc.ApiExplorer
             }
         }
 
-        private ApiDescriptionGroupCollection GetCollection(ActionDescriptorsCollection actionDescriptors)
+        private ApiDescriptionGroupCollection GetCollection(ActionDescriptorCollection actionDescriptors)
         {
             var context = new ApiDescriptionProviderContext(actionDescriptors.Items);
 
diff --git a/src/Microsoft.AspNet.Mvc.Core/DependencyInjection/MvcCoreServiceCollectionExtensions.cs b/src/Microsoft.AspNet.Mvc.Core/DependencyInjection/MvcCoreServiceCollectionExtensions.cs
index 04dc0e6344..35cceb894f 100644
--- a/src/Microsoft.AspNet.Mvc.Core/DependencyInjection/MvcCoreServiceCollectionExtensions.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/DependencyInjection/MvcCoreServiceCollectionExtensions.cs
@@ -84,7 +84,7 @@ namespace Microsoft.Extensions.DependencyInjection
                 ServiceDescriptor.Transient<IApplicationModelProvider, DefaultApplicationModelProvider>());
             services.TryAddEnumerable(
                 ServiceDescriptor.Transient<IActionDescriptorProvider, ControllerActionDescriptorProvider>());
-            services.TryAddSingleton<IActionDescriptorsCollectionProvider, DefaultActionDescriptorsCollectionProvider>();
+            services.TryAddSingleton<IActionDescriptorCollectionProvider, DefaultActionDescriptorCollectionProvider>();
 
             //
             // Action Selection
diff --git a/src/Microsoft.AspNet.Mvc.Core/Infrastructure/ActionDescriptorsCollection.cs b/src/Microsoft.AspNet.Mvc.Core/Infrastructure/ActionDescriptorCollection.cs
similarity index 88%
rename from src/Microsoft.AspNet.Mvc.Core/Infrastructure/ActionDescriptorsCollection.cs
rename to src/Microsoft.AspNet.Mvc.Core/Infrastructure/ActionDescriptorCollection.cs
index d7fc85bfe8..836a8dec03 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Infrastructure/ActionDescriptorsCollection.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Infrastructure/ActionDescriptorCollection.cs
@@ -10,14 +10,14 @@ namespace Microsoft.AspNet.Mvc.Infrastructure
     /// <summary>
     /// A cached collection of <see cref="ActionDescriptor" />.
     /// </summary>
-    public class ActionDescriptorsCollection
+    public class ActionDescriptorCollection
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="ActionDescriptorsCollection"/>.
+        /// Initializes a new instance of the <see cref="ActionDescriptorCollection"/>.
         /// </summary>
         /// <param name="items">The result of action discovery</param>
         /// <param name="version">The unique version of discovered actions.</param>
-        public ActionDescriptorsCollection(IReadOnlyList<ActionDescriptor> items, int version)
+        public ActionDescriptorCollection(IReadOnlyList<ActionDescriptor> items, int version)
         {
             if (items == null)
             {
diff --git a/src/Microsoft.AspNet.Mvc.Core/Infrastructure/DefaultActionDescriptorsCollectionProvider.cs b/src/Microsoft.AspNet.Mvc.Core/Infrastructure/DefaultActionDescriptorCollectionProvider.cs
similarity index 77%
rename from src/Microsoft.AspNet.Mvc.Core/Infrastructure/DefaultActionDescriptorsCollectionProvider.cs
rename to src/Microsoft.AspNet.Mvc.Core/Infrastructure/DefaultActionDescriptorCollectionProvider.cs
index a9c676f611..92d3a5e638 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Infrastructure/DefaultActionDescriptorsCollectionProvider.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Infrastructure/DefaultActionDescriptorCollectionProvider.cs
@@ -10,19 +10,19 @@ using Microsoft.Extensions.DependencyInjection;
 namespace Microsoft.AspNet.Mvc.Infrastructure
 {
     /// <summary>
-    /// Default implementation for ActionDescriptors.
+    /// Default implementation of <see cref="IActionDescriptorCollectionProvider"/>.
     /// This implementation caches the results at first call, and is not responsible for updates.
     /// </summary>
-    public class DefaultActionDescriptorsCollectionProvider : IActionDescriptorsCollectionProvider
+    public class DefaultActionDescriptorCollectionProvider : IActionDescriptorCollectionProvider
     {
         private readonly IServiceProvider _serviceProvider;
-        private ActionDescriptorsCollection _collection;
+        private ActionDescriptorCollection _collection;
 
         /// <summary>
-        /// Initializes a new instance of the <see cref="DefaultActionDescriptorsCollectionProvider" /> class.
+        /// Initializes a new instance of the <see cref="DefaultActionDescriptorCollectionProvider" /> class.
         /// </summary>
         /// <param name="serviceProvider">The application IServiceProvider.</param>
-        public DefaultActionDescriptorsCollectionProvider(IServiceProvider serviceProvider)
+        public DefaultActionDescriptorCollectionProvider(IServiceProvider serviceProvider)
         {
             _serviceProvider = serviceProvider;
         }
@@ -30,7 +30,7 @@ namespace Microsoft.AspNet.Mvc.Infrastructure
         /// <summary>
         /// Returns a cached collection of <see cref="ActionDescriptor" />.
         /// </summary>
-        public ActionDescriptorsCollection ActionDescriptors
+        public ActionDescriptorCollection ActionDescriptors
         {
             get
             {
@@ -43,7 +43,7 @@ namespace Microsoft.AspNet.Mvc.Infrastructure
             }
         }
 
-        private ActionDescriptorsCollection GetCollection()
+        private ActionDescriptorCollection GetCollection()
         {
             var providers =
                 _serviceProvider.GetServices<IActionDescriptorProvider>()
@@ -62,7 +62,7 @@ namespace Microsoft.AspNet.Mvc.Infrastructure
                 providers[i].OnProvidersExecuted(context);
             }
 
-            return new ActionDescriptorsCollection(
+            return new ActionDescriptorCollection(
                 new ReadOnlyCollection<ActionDescriptor>(context.Results), 0);
         }
     }
diff --git a/src/Microsoft.AspNet.Mvc.Core/Infrastructure/IActionDescriptorsCollectionProvider.cs b/src/Microsoft.AspNet.Mvc.Core/Infrastructure/IActionDescriptorCollectionProvider.cs
similarity index 80%
rename from src/Microsoft.AspNet.Mvc.Core/Infrastructure/IActionDescriptorsCollectionProvider.cs
rename to src/Microsoft.AspNet.Mvc.Core/Infrastructure/IActionDescriptorCollectionProvider.cs
index 8e31c09251..dc25e54a4d 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Infrastructure/IActionDescriptorsCollectionProvider.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Infrastructure/IActionDescriptorCollectionProvider.cs
@@ -10,16 +10,16 @@ namespace Microsoft.AspNet.Mvc.Infrastructure
     /// The default implementation, does not update the cache, it is up to the user
     /// to create or use an implementation that can update the available actions in
     /// the application. The implementor is also responsible for updating the
-    /// <see cref="ActionDescriptorsCollection.Version"/> in a thread safe way.
+    /// <see cref="ActionDescriptorCollection.Version"/> in a thread safe way.
     ///
     /// Default consumers of this service, are aware of the version and will recache
     /// data as appropriate, but rely on the version being unique.
     /// </remarks>
-    public interface IActionDescriptorsCollectionProvider
+    public interface IActionDescriptorCollectionProvider
     {
         /// <summary>
-        /// Returns the current cached <see cref="ActionDescriptorsCollection"/>
+        /// Returns the current cached <see cref="ActionDescriptorCollection"/>
         /// </summary>
-        ActionDescriptorsCollection ActionDescriptors { get; }
+        ActionDescriptorCollection ActionDescriptors { get; }
     }
 }
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Mvc.Core/Routing/ActionSelectionDecisionTree.cs b/src/Microsoft.AspNet.Mvc.Core/Routing/ActionSelectionDecisionTree.cs
index 80ce81af5d..cd3723f14d 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Routing/ActionSelectionDecisionTree.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Routing/ActionSelectionDecisionTree.cs
@@ -6,7 +6,6 @@ using System.Collections.Generic;
 #if NET451
 using System.ComponentModel;
 #endif
-using System.Diagnostics;
 using Microsoft.AspNet.Mvc.Abstractions;
 using Microsoft.AspNet.Mvc.Infrastructure;
 using Microsoft.AspNet.Routing;
@@ -22,8 +21,8 @@ namespace Microsoft.AspNet.Mvc.Routing
         /// <summary>
         /// Creates a new <see cref="ActionSelectionDecisionTree"/>.
         /// </summary>
-        /// <param name="actions">The <see cref="ActionDescriptorsCollection"/>.</param>
-        public ActionSelectionDecisionTree(ActionDescriptorsCollection actions)
+        /// <param name="actions">The <see cref="ActionDescriptorCollection"/>.</param>
+        public ActionSelectionDecisionTree(ActionDescriptorCollection actions)
         {
             Version = actions.Version;
 
diff --git a/src/Microsoft.AspNet.Mvc.Core/Routing/ActionSelectorDecisionTreeProvider.cs b/src/Microsoft.AspNet.Mvc.Core/Routing/ActionSelectorDecisionTreeProvider.cs
index e1cb10ec1b..ff70f7c9a7 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Routing/ActionSelectorDecisionTreeProvider.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Routing/ActionSelectorDecisionTreeProvider.cs
@@ -10,19 +10,19 @@ namespace Microsoft.AspNet.Mvc.Routing
     /// <inheritdoc />
     public class ActionSelectorDecisionTreeProvider : IActionSelectorDecisionTreeProvider
     {
-        private readonly IActionDescriptorsCollectionProvider _actionDescriptorsCollectionProvider;
+        private readonly IActionDescriptorCollectionProvider _actionDescriptorCollectionProvider;
         private ActionSelectionDecisionTree _decisionTree;
 
         /// <summary>
         /// Creates a new <see cref="ActionSelectorDecisionTreeProvider"/>.
         /// </summary>
-        /// <param name="actionDescriptorsCollectionProvider">
-        /// The <see cref="IActionDescriptorsCollectionProvider"/>.
+        /// <param name="actionDescriptorCollectionProvider">
+        /// The <see cref="IActionDescriptorCollectionProvider"/>.
         /// </param>
         public ActionSelectorDecisionTreeProvider(
-            IActionDescriptorsCollectionProvider actionDescriptorsCollectionProvider)
+            IActionDescriptorCollectionProvider actionDescriptorCollectionProvider)
         {
-            _actionDescriptorsCollectionProvider = actionDescriptorsCollectionProvider;
+            _actionDescriptorCollectionProvider = actionDescriptorCollectionProvider;
         }
 
         /// <inheritdoc />
@@ -30,13 +30,13 @@ namespace Microsoft.AspNet.Mvc.Routing
         {
             get
             {
-                var descriptors = _actionDescriptorsCollectionProvider.ActionDescriptors;
+                var descriptors = _actionDescriptorCollectionProvider.ActionDescriptors;
                 if (descriptors == null)
                 {
                     throw new InvalidOperationException(
                         Resources.FormatPropertyOfTypeCannotBeNull(
                             "ActionDescriptors",
-                            _actionDescriptorsCollectionProvider.GetType()));
+                            _actionDescriptorCollectionProvider.GetType()));
                 }
 
                 if (_decisionTree == null || descriptors.Version != _decisionTree.Version)
diff --git a/src/Microsoft.AspNet.Mvc.Core/Routing/AttributeRoute.cs b/src/Microsoft.AspNet.Mvc.Core/Routing/AttributeRoute.cs
index ae48e99f6a..491162422d 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Routing/AttributeRoute.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Routing/AttributeRoute.cs
@@ -21,7 +21,7 @@ namespace Microsoft.AspNet.Mvc.Routing
     public class AttributeRoute : IRouter
     {
         private readonly IRouter _target;
-        private readonly IActionDescriptorsCollectionProvider _actionDescriptorsCollectionProvider;
+        private readonly IActionDescriptorCollectionProvider _actionDescriptorCollectionProvider;
         private readonly IInlineConstraintResolver _constraintResolver;
         private readonly ObjectPool<UriBuildingContext> _contextPool;
         private readonly UrlEncoder _urlEncoder;
@@ -31,7 +31,7 @@ namespace Microsoft.AspNet.Mvc.Routing
 
         public AttributeRoute(
             IRouter target,
-            IActionDescriptorsCollectionProvider actionDescriptorsCollectionProvider,
+            IActionDescriptorCollectionProvider actionDescriptorCollectionProvider,
             IInlineConstraintResolver constraintResolver,
             ObjectPool<UriBuildingContext> contextPool,
             UrlEncoder urlEncoder,
@@ -42,9 +42,9 @@ namespace Microsoft.AspNet.Mvc.Routing
                 throw new ArgumentNullException(nameof(target));
             }
 
-            if (actionDescriptorsCollectionProvider == null)
+            if (actionDescriptorCollectionProvider == null)
             {
-                throw new ArgumentNullException(nameof(actionDescriptorsCollectionProvider));
+                throw new ArgumentNullException(nameof(actionDescriptorCollectionProvider));
             }
 
             if (constraintResolver == null)
@@ -68,7 +68,7 @@ namespace Microsoft.AspNet.Mvc.Routing
             }
 
             _target = target;
-            _actionDescriptorsCollectionProvider = actionDescriptorsCollectionProvider;
+            _actionDescriptorCollectionProvider = actionDescriptorCollectionProvider;
             _constraintResolver = constraintResolver;
             _contextPool = contextPool;
             _urlEncoder = urlEncoder;
@@ -91,7 +91,7 @@ namespace Microsoft.AspNet.Mvc.Routing
 
         private TreeRouter GetTreeRouter()
         {
-            var actions = _actionDescriptorsCollectionProvider.ActionDescriptors;
+            var actions = _actionDescriptorCollectionProvider.ActionDescriptors;
 
             // This is a safe-race. We'll never set router back to null after initializing
             // it on startup.
@@ -103,7 +103,7 @@ namespace Microsoft.AspNet.Mvc.Routing
             return _router;
         }
 
-        private TreeRouter BuildRoute(ActionDescriptorsCollection actions)
+        private TreeRouter BuildRoute(ActionDescriptorCollection actions)
         {
             var routeBuilder = new TreeRouteBuilder(_target, _loggerFactory);
             var routeInfos = GetRouteInfos(_constraintResolver, actions.Items);
diff --git a/src/Microsoft.AspNet.Mvc.Core/Routing/AttributeRouting.cs b/src/Microsoft.AspNet.Mvc.Core/Routing/AttributeRouting.cs
index 5b52c9629f..dfa20786c1 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Routing/AttributeRouting.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Routing/AttributeRouting.cs
@@ -32,7 +32,7 @@ namespace Microsoft.AspNet.Mvc.Routing
                 throw new ArgumentNullException(nameof(services));
             }
 
-            var actionDescriptorProvider = services.GetRequiredService<IActionDescriptorsCollectionProvider>();
+            var actionDescriptorProvider = services.GetRequiredService<IActionDescriptorCollectionProvider>();
             var inlineConstraintResolver = services.GetRequiredService<IInlineConstraintResolver>();
             var pool = services.GetRequiredService<ObjectPool<UriBuildingContext>>();
             var urlEncoder = services.GetRequiredService<UrlEncoder>();
diff --git a/src/Microsoft.AspNet.Mvc.Core/Routing/IActionSelectionDecisionTree.cs b/src/Microsoft.AspNet.Mvc.Core/Routing/IActionSelectionDecisionTree.cs
index 4236a09850..eab340ffd7 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Routing/IActionSelectionDecisionTree.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Routing/IActionSelectionDecisionTree.cs
@@ -14,7 +14,7 @@ namespace Microsoft.AspNet.Mvc.Routing
     {
         /// <summary>
         /// Gets the version. The same as the value of
-        /// <see cref="Infrastructure.ActionDescriptorsCollection.Version"/>.
+        /// <see cref="Infrastructure.ActionDescriptorCollection.Version"/>.
         /// </summary>
         int Version { get; }
 
diff --git a/src/Microsoft.AspNet.Mvc.Core/Routing/IActionSelectorDecisionTreeProvider.cs b/src/Microsoft.AspNet.Mvc.Core/Routing/IActionSelectorDecisionTreeProvider.cs
index 07110c28b3..0b67057199 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Routing/IActionSelectorDecisionTreeProvider.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Routing/IActionSelectorDecisionTreeProvider.cs
@@ -5,12 +5,12 @@ namespace Microsoft.AspNet.Mvc.Routing
 {
     /// <summary>
     /// Stores an <see cref="ActionSelectionDecisionTree"/> for the current value of
-    /// <see cref="Infrastructure.IActionDescriptorsCollectionProvider.ActionDescriptors"/>.
+    /// <see cref="Infrastructure.IActionDescriptorCollectionProvider.ActionDescriptors"/>.
     /// </summary>
     public interface IActionSelectorDecisionTreeProvider
     {
         /// <summary>
-        /// Gets the <see cref="Infrastructure.IActionDescriptorsCollectionProvider"/>.
+        /// Gets the <see cref="Infrastructure.IActionDescriptorCollectionProvider"/>.
         /// </summary>
         IActionSelectionDecisionTree DecisionTree
         {
diff --git a/src/Microsoft.AspNet.Mvc.Core/Routing/KnownRouteValueConstraint.cs b/src/Microsoft.AspNet.Mvc.Core/Routing/KnownRouteValueConstraint.cs
index 5f165e9ca4..c52ca3b894 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Routing/KnownRouteValueConstraint.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Routing/KnownRouteValueConstraint.cs
@@ -64,23 +64,23 @@ namespace Microsoft.AspNet.Mvc.Routing
 
         private string[] GetAndCacheAllMatchingValues(string routeKey, HttpContext httpContext)
         {
-            var actionDescriptors = GetAndValidateActionDescriptorsCollection(httpContext);
+            var actionDescriptors = GetAndValidateActionDescriptorCollection(httpContext);
             var version = actionDescriptors.Version;
             var valuesCollection = _cachedValuesCollection;
 
             if (valuesCollection == null ||
                 version != valuesCollection.Version)
             {
-                var routeValueCollection = actionDescriptors
-                                            .Items
-                                            .Select(ad => ad.RouteConstraints
-                                                            .FirstOrDefault(
-                                                                c => c.RouteKey == routeKey &&
-                                                                c.KeyHandling == RouteKeyHandling.RequireKey))
-                                            .Where(rc => rc != null)
-                                            .Select(rc => rc.RouteValue)
-                                            .Distinct()
-                                            .ToArray();
+                var routeValueCollection =
+                    actionDescriptors
+                        .Items
+                        .Select(ad => ad.RouteConstraints.FirstOrDefault(
+                            c => c.RouteKey == routeKey &&
+                            c.KeyHandling == RouteKeyHandling.RequireKey))
+                        .Where(rc => rc != null)
+                        .Select(rc => rc.RouteValue)
+                        .Distinct()
+                        .ToArray();
 
                 valuesCollection = new RouteValuesCollection(version, routeValueCollection);
                 _cachedValuesCollection = valuesCollection;
@@ -89,10 +89,10 @@ namespace Microsoft.AspNet.Mvc.Routing
             return _cachedValuesCollection.Items;
         }
 
-        private static ActionDescriptorsCollection GetAndValidateActionDescriptorsCollection(HttpContext httpContext)
+        private static ActionDescriptorCollection GetAndValidateActionDescriptorCollection(HttpContext httpContext)
         {
-            var provider = httpContext.RequestServices
-                                      .GetRequiredService<IActionDescriptorsCollectionProvider>();
+            var services = httpContext.RequestServices;
+            var provider = services.GetRequiredService<IActionDescriptorCollectionProvider>();
             var descriptors = provider.ActionDescriptors;
 
             if (descriptors == null)
diff --git a/test/Microsoft.AspNet.Mvc.Core.Test/Infrastructure/DefaultActionSelectorTests.cs b/test/Microsoft.AspNet.Mvc.Core.Test/Infrastructure/DefaultActionSelectorTests.cs
index 0e63851ffe..779a010f86 100644
--- a/test/Microsoft.AspNet.Mvc.Core.Test/Infrastructure/DefaultActionSelectorTests.cs
+++ b/test/Microsoft.AspNet.Mvc.Core.Test/Infrastructure/DefaultActionSelectorTests.cs
@@ -518,9 +518,9 @@ namespace Microsoft.AspNet.Mvc.Infrastructure
 
             serviceContainer.AddSingleton(typeof(IEnumerable<IActionDescriptorProvider>), list);
 
-            var actionDescriptorsCollectionProvider = new DefaultActionDescriptorsCollectionProvider(
+            var actionDescriptorCollectionProvider = new DefaultActionDescriptorCollectionProvider(
                 serviceContainer.BuildServiceProvider());
-            var decisionTreeProvider = new ActionSelectorDecisionTreeProvider(actionDescriptorsCollectionProvider);
+            var decisionTreeProvider = new ActionSelectorDecisionTreeProvider(actionDescriptorCollectionProvider);
 
             var actionConstraintProviders = new[]
             {
@@ -599,10 +599,10 @@ namespace Microsoft.AspNet.Mvc.Infrastructure
         {
             loggerFactory = loggerFactory ?? NullLoggerFactory.Instance;
 
-            var actionProvider = new Mock<IActionDescriptorsCollectionProvider>(MockBehavior.Strict);
+            var actionProvider = new Mock<IActionDescriptorCollectionProvider>(MockBehavior.Strict);
 
             actionProvider
-                .Setup(p => p.ActionDescriptors).Returns(new ActionDescriptorsCollection(actions, 0));
+                .Setup(p => p.ActionDescriptors).Returns(new ActionDescriptorCollection(actions, 0));
 
             var decisionTreeProvider = new ActionSelectorDecisionTreeProvider(actionProvider.Object);
 
diff --git a/test/Microsoft.AspNet.Mvc.Core.Test/Routing/AttributeRouteTest.cs b/test/Microsoft.AspNet.Mvc.Core.Test/Routing/AttributeRouteTest.cs
index caf6a46f9e..055aa12454 100644
--- a/test/Microsoft.AspNet.Mvc.Core.Test/Routing/AttributeRouteTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Core.Test/Routing/AttributeRouteTest.cs
@@ -64,17 +64,17 @@ namespace Microsoft.AspNet.Mvc.Routing
                 },
             };
 
-            var actionDescriptorsProvider = new Mock<IActionDescriptorsCollectionProvider>(MockBehavior.Strict);
-            actionDescriptorsProvider
+            var actionDescriptorProvider = new Mock<IActionDescriptorCollectionProvider>(MockBehavior.Strict);
+            actionDescriptorProvider
                 .SetupGet(ad => ad.ActionDescriptors)
-                .Returns(new ActionDescriptorsCollection(actionDescriptors, version: 1));
+                .Returns(new ActionDescriptorCollection(actionDescriptors, version: 1));
 
             var policy = new UriBuilderContextPooledObjectPolicy(new UrlTestEncoder());
             var pool = new DefaultObjectPool<UriBuildingContext>(policy);
 
             var route = new AttributeRoute(
                 handler.Object,
-                actionDescriptorsProvider.Object,
+                actionDescriptorProvider.Object,
                 Mock.Of<IInlineConstraintResolver>(),
                 pool,
                 new UrlTestEncoder(),
@@ -103,9 +103,9 @@ namespace Microsoft.AspNet.Mvc.Routing
 
             // Arrange 2 - remove the action and update the collection
             actionDescriptors.RemoveAt(1);
-            actionDescriptorsProvider
+            actionDescriptorProvider
                 .SetupGet(ad => ad.ActionDescriptors)
-                .Returns(new ActionDescriptorsCollection(actionDescriptors, version: 2));
+                .Returns(new ActionDescriptorCollection(actionDescriptors, version: 2));
 
             context = new RouteContext(httpContext);
 
diff --git a/test/Microsoft.AspNet.Mvc.Core.Test/Routing/AttributeRoutingTest.cs b/test/Microsoft.AspNet.Mvc.Core.Test/Routing/AttributeRoutingTest.cs
index bcb2560a84..c5398f3923 100644
--- a/test/Microsoft.AspNet.Mvc.Core.Test/Routing/AttributeRoutingTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Core.Test/Routing/AttributeRoutingTest.cs
@@ -180,9 +180,9 @@ namespace Microsoft.AspNet.Mvc.Routing
 
         private static IServiceProvider CreateServices(params ActionDescriptor[] actions)
         {
-            var collection = new ActionDescriptorsCollection(actions, version: 0);
+            var collection = new ActionDescriptorCollection(actions, version: 0);
 
-            var actionDescriptorProvider = new Mock<IActionDescriptorsCollectionProvider>();
+            var actionDescriptorProvider = new Mock<IActionDescriptorCollectionProvider>();
             actionDescriptorProvider
                 .Setup(a => a.ActionDescriptors)
                 .Returns(collection);
diff --git a/test/Microsoft.AspNet.Mvc.Core.Test/Routing/KnownRouteValueConstraintTests.cs b/test/Microsoft.AspNet.Mvc.Core.Test/Routing/KnownRouteValueConstraintTests.cs
index 92b56c2730..f9052cbd44 100644
--- a/test/Microsoft.AspNet.Mvc.Core.Test/Routing/KnownRouteValueConstraintTests.cs
+++ b/test/Microsoft.AspNet.Mvc.Core.Test/Routing/KnownRouteValueConstraintTests.cs
@@ -130,13 +130,13 @@ namespace Microsoft.AspNet.Mvc.Routing
         [Theory]
         [InlineData(RouteDirection.IncomingRequest)]
         [InlineData(RouteDirection.UrlGeneration)]
-        public void ActionDescriptorsCollection_SettingNullValue_Throws(RouteDirection direction)
+        public void ActionDescriptorCollection_SettingNullValue_Throws(RouteDirection direction)
         {
             // Arrange
-            var actionDescriptorCollectionProvider = Mock.Of<IActionDescriptorsCollectionProvider>();
+            var actionDescriptorCollectionProvider = Mock.Of<IActionDescriptorCollectionProvider>();
             var httpContext = new Mock<HttpContext>();
             httpContext
-                .Setup(o => o.RequestServices.GetService(typeof(IActionDescriptorsCollectionProvider)))
+                .Setup(o => o.RequestServices.GetService(typeof(IActionDescriptorCollectionProvider)))
                 .Returns(actionDescriptorCollectionProvider);
 
             // Act & Assert
@@ -175,8 +175,8 @@ namespace Microsoft.AspNet.Mvc.Routing
                    .Returns(new[] { actionProvider.Object });
 
             context.Setup(o => o.RequestServices
-                               .GetService(typeof(IActionDescriptorsCollectionProvider)))
-                   .Returns(new DefaultActionDescriptorsCollectionProvider(context.Object.RequestServices));
+                               .GetService(typeof(IActionDescriptorCollectionProvider)))
+                   .Returns(new DefaultActionDescriptorCollectionProvider(context.Object.RequestServices));
             return context.Object;
         }