diff --git a/src/Microsoft.AspNet.Mvc.Core/Filters/ActionFilterEndPoint.cs b/src/Microsoft.AspNet.Mvc.Core/Filters/ActionFilterEndPoint.cs
index bdc141be8b..d14b40273c 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Filters/ActionFilterEndPoint.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Filters/ActionFilterEndPoint.cs
@@ -4,7 +4,7 @@ using System.Threading.Tasks;
 
 namespace Microsoft.AspNet.Mvc.Filters
 {
-    // This one lives in the FilterDescriptors namespace, and only intended to be consumed by folks that rewrite the action invoker.
+    // This one lives in the Filters namespace, and only intended to be consumed by folks that rewrite the action invoker.
     public class ReflectedActionFilterEndPoint : IActionFilter
     {
         private readonly Func<object[], Task<object>> _coreMethodInvoker;
diff --git a/src/Microsoft.AspNet.Mvc.Core/Filters/DefaultFilterProvider.cs b/src/Microsoft.AspNet.Mvc.Core/Filters/DefaultFilterProvider.cs
index 53c285becc..e1908fce94 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Filters/DefaultFilterProvider.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Filters/DefaultFilterProvider.cs
@@ -55,8 +55,7 @@ namespace Microsoft.AspNet.Mvc.Filters
             if (typeFilterSignature != null)
             {
                 // TODO: How do we pass extra parameters
-                var typeFilter =
-                    ServiceProvider.GetService<TypeActivator>().CreateInstance(typeFilterSignature.ImplementationType);
+                var typeFilter = ActivatorUtilities.CreateInstance(ServiceProvider, typeFilterSignature.ImplementationType);
 
                 AddFilters(context, typeFilter, true);
                 failIfNotFilter = false;
diff --git a/src/Microsoft.AspNet.Mvc.Core/Filters/FilterDescriptorComparer.cs b/src/Microsoft.AspNet.Mvc.Core/Filters/FilterDescriptorComparer.cs
index 4f5817b0d7..a1261e7f0d 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Filters/FilterDescriptorComparer.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Filters/FilterDescriptorComparer.cs
@@ -4,7 +4,7 @@ namespace Microsoft.AspNet.Mvc
 {
     public class FilterDescriptorComparer : IComparer<FilterDescriptor>
     {
-        private static FilterDescriptorComparer _comparer = new FilterDescriptorComparer();
+        private static readonly FilterDescriptorComparer _comparer = new FilterDescriptorComparer();
 
         public static FilterDescriptorComparer Comparer { get { return _comparer; } }
 
diff --git a/src/Microsoft.AspNet.Mvc.Core/Filters/FilterOrigin.cs b/src/Microsoft.AspNet.Mvc.Core/Filters/FilterOrigin.cs
index 416fc51f4f..f632b40e10 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Filters/FilterOrigin.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Filters/FilterOrigin.cs
@@ -3,7 +3,7 @@
     public static class FilterOrigin
     {
         public static readonly int Action = 100;
-        public static readonly int Controlller = 200;
+        public static readonly int Controller = 200;
         public static readonly int Global = 300;
     }
 }
diff --git a/src/Microsoft.AspNet.Mvc.Core/ReflectedActionDescriptorProvider.cs b/src/Microsoft.AspNet.Mvc.Core/ReflectedActionDescriptorProvider.cs
index a890b965d4..7ab772e011 100644
--- a/src/Microsoft.AspNet.Mvc.Core/ReflectedActionDescriptorProvider.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/ReflectedActionDescriptorProvider.cs
@@ -51,7 +51,7 @@ namespace Microsoft.AspNet.Mvc
                 var controllerAttributes = cd.ControllerTypeInfo.GetCustomAttributes(inherit: true).ToArray();
                 var globalAndControllerFilters =
                     controllerAttributes.OfType<IFilter>()
-                                        .Select(filter => new FilterDescriptor(filter, FilterOrigin.Controlller))
+                                        .Select(filter => new FilterDescriptor(filter, FilterOrigin.Controller))
                                         .Concat(_globalFilters)
                                         .OrderBy(d => d, FilterDescriptorComparer.Comparer)
                                         .ToArray();