diff --git a/test/Microsoft.AspNet.Mvc.IntegrationTests/ByteArrayModelBinderIntegrationTest.cs b/test/Microsoft.AspNet.Mvc.IntegrationTests/ByteArrayModelBinderIntegrationTest.cs
index ecb005ad21..18ba1be4cd 100644
--- a/test/Microsoft.AspNet.Mvc.IntegrationTests/ByteArrayModelBinderIntegrationTest.cs
+++ b/test/Microsoft.AspNet.Mvc.IntegrationTests/ByteArrayModelBinderIntegrationTest.cs
@@ -39,7 +39,7 @@ namespace Microsoft.AspNet.Mvc.IntegrationTests
             var operationContext = ModelBindingTestHelper.GetOperationBindingContext(
                 request =>
                 {
-                    request.QueryString = new QueryString(queryStringKey, value);
+                    request.QueryString = QueryString.Create(queryStringKey, value);
                 });
             var modelState = new ModelStateDictionary();
 
@@ -131,7 +131,7 @@ namespace Microsoft.AspNet.Mvc.IntegrationTests
             var operationContext = ModelBindingTestHelper.GetOperationBindingContext(
                 request =>
                 {
-                    request.QueryString = new QueryString("CustomParameter", value);
+                    request.QueryString = QueryString.Create("CustomParameter", value);
                 });
 
             var modelState = new ModelStateDictionary();
diff --git a/test/Microsoft.AspNet.Mvc.IntegrationTests/FormCollectionModelBindingIntegrationTest.cs b/test/Microsoft.AspNet.Mvc.IntegrationTests/FormCollectionModelBindingIntegrationTest.cs
index a411ff3f58..4849cf61f6 100644
--- a/test/Microsoft.AspNet.Mvc.IntegrationTests/FormCollectionModelBindingIntegrationTest.cs
+++ b/test/Microsoft.AspNet.Mvc.IntegrationTests/FormCollectionModelBindingIntegrationTest.cs
@@ -43,7 +43,7 @@ namespace Microsoft.AspNet.Mvc.IntegrationTests
             var operationContext = ModelBindingTestHelper.GetOperationBindingContext(
                 request =>
                 {
-                    request.QueryString = new QueryString("Address.Zip", "12345");
+                    request.QueryString = QueryString.Create("Address.Zip", "12345");
                     UpdateRequest(request, data, "Address.File");
                 });
 
diff --git a/test/Microsoft.AspNet.Mvc.IntegrationTests/FormFileModelBindingIntegrationTest.cs b/test/Microsoft.AspNet.Mvc.IntegrationTests/FormFileModelBindingIntegrationTest.cs
index 9c8e578f1f..c778ccd7c6 100644
--- a/test/Microsoft.AspNet.Mvc.IntegrationTests/FormFileModelBindingIntegrationTest.cs
+++ b/test/Microsoft.AspNet.Mvc.IntegrationTests/FormFileModelBindingIntegrationTest.cs
@@ -43,7 +43,7 @@ namespace Microsoft.AspNet.Mvc.IntegrationTests
             var operationContext = ModelBindingTestHelper.GetOperationBindingContext(
                 request =>
                 {
-                    request.QueryString = new QueryString("Address.Zip", "12345");
+                    request.QueryString = QueryString.Create("Address.Zip", "12345");
                     UpdateRequest(request, data, "Address.File");
                 });
 
diff --git a/test/Microsoft.AspNet.Mvc.IntegrationTests/TypeConverterModelBinderIntegrationTest.cs b/test/Microsoft.AspNet.Mvc.IntegrationTests/TypeConverterModelBinderIntegrationTest.cs
index ff19e97fff..8ba18736c7 100644
--- a/test/Microsoft.AspNet.Mvc.IntegrationTests/TypeConverterModelBinderIntegrationTest.cs
+++ b/test/Microsoft.AspNet.Mvc.IntegrationTests/TypeConverterModelBinderIntegrationTest.cs
@@ -38,7 +38,7 @@ namespace Microsoft.AspNet.Mvc.IntegrationTests
 
             var operationContext = ModelBindingTestHelper.GetOperationBindingContext(request =>
             {
-                request.QueryString = new QueryString("CustomParameter.Address.Zip", "1");
+                request.QueryString = QueryString.Create("CustomParameter.Address.Zip", "1");
             });
 
             var modelState = new ModelStateDictionary();
@@ -85,7 +85,7 @@ namespace Microsoft.AspNet.Mvc.IntegrationTests
 
             var operationContext = ModelBindingTestHelper.GetOperationBindingContext(request =>
             {
-                request.QueryString = new QueryString("Address.Zip", "1");
+                request.QueryString = QueryString.Create("Address.Zip", "1");
             });
 
             var modelState = new ModelStateDictionary();
@@ -133,7 +133,7 @@ namespace Microsoft.AspNet.Mvc.IntegrationTests
 
             var operationContext = ModelBindingTestHelper.GetOperationBindingContext(request =>
             {
-                request.QueryString = new QueryString("Parameter1", "someValue");
+                request.QueryString = QueryString.Create("Parameter1", "someValue");
             });
 
             var modelState = new ModelStateDictionary();