diff --git a/src/Microsoft.AspNet.Html.Abstractions/Properties/AssemblyInfo.cs b/src/Microsoft.AspNet.Html.Abstractions/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000000..b2437d9ad6
--- /dev/null
+++ b/src/Microsoft.AspNet.Html.Abstractions/Properties/AssemblyInfo.cs
@@ -0,0 +1,8 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System.Reflection;
+using System.Resources;
+
+[assembly: AssemblyMetadata("Serviceable", "True")]
+[assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Html.Abstractions/project.json b/src/Microsoft.AspNet.Html.Abstractions/project.json
index a2a7420401..6ecc82e292 100644
--- a/src/Microsoft.AspNet.Html.Abstractions/project.json
+++ b/src/Microsoft.AspNet.Html.Abstractions/project.json
@@ -11,6 +11,10 @@
     "frameworks": {
         "net45" : { },
         "dnx451": { },
-        "dnxcore50": { }
+        "dnxcore50": {
+            "dependencies": {
+                "System.Resources.ResourceManager": "4.0.1-beta-"
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Http.Abstractions/Properties/AssemblyInfo.cs b/src/Microsoft.AspNet.Http.Abstractions/Properties/AssemblyInfo.cs
index 2565f9261e..08ea154ce6 100644
--- a/src/Microsoft.AspNet.Http.Abstractions/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.AspNet.Http.Abstractions/Properties/AssemblyInfo.cs
@@ -2,7 +2,9 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Reflection;
+using System.Resources;
 using System.Runtime.CompilerServices;
 
 [assembly: AssemblyMetadata("Serviceable", "True")]
-[assembly: InternalsVisibleTo("Microsoft.AspNet.Http.Abstractions.Tests")]
\ No newline at end of file
+[assembly: InternalsVisibleTo("Microsoft.AspNet.Http.Abstractions.Tests")]
+[assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Http.Extensions/Properties/AssemblyInfo.cs b/src/Microsoft.AspNet.Http.Extensions/Properties/AssemblyInfo.cs
index 025a94598c..b2437d9ad6 100644
--- a/src/Microsoft.AspNet.Http.Extensions/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.AspNet.Http.Extensions/Properties/AssemblyInfo.cs
@@ -2,5 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Reflection;
+using System.Resources;
 
-[assembly: AssemblyMetadata("Serviceable", "True")]
\ No newline at end of file
+[assembly: AssemblyMetadata("Serviceable", "True")]
+[assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Http.Features/Properties/AssemblyInfo.cs b/src/Microsoft.AspNet.Http.Features/Properties/AssemblyInfo.cs
index 025a94598c..b2437d9ad6 100644
--- a/src/Microsoft.AspNet.Http.Features/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.AspNet.Http.Features/Properties/AssemblyInfo.cs
@@ -2,5 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Reflection;
+using System.Resources;
 
-[assembly: AssemblyMetadata("Serviceable", "True")]
\ No newline at end of file
+[assembly: AssemblyMetadata("Serviceable", "True")]
+[assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Http/Properties/AssemblyInfo.cs b/src/Microsoft.AspNet.Http/Properties/AssemblyInfo.cs
index 025a94598c..b2437d9ad6 100644
--- a/src/Microsoft.AspNet.Http/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.AspNet.Http/Properties/AssemblyInfo.cs
@@ -2,5 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Reflection;
+using System.Resources;
 
-[assembly: AssemblyMetadata("Serviceable", "True")]
\ No newline at end of file
+[assembly: AssemblyMetadata("Serviceable", "True")]
+[assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Owin/Properties/AssemblyInfo.cs b/src/Microsoft.AspNet.Owin/Properties/AssemblyInfo.cs
index 025a94598c..b2437d9ad6 100644
--- a/src/Microsoft.AspNet.Owin/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.AspNet.Owin/Properties/AssemblyInfo.cs
@@ -2,5 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Reflection;
+using System.Resources;
 
-[assembly: AssemblyMetadata("Serviceable", "True")]
\ No newline at end of file
+[assembly: AssemblyMetadata("Serviceable", "True")]
+[assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.WebUtilities/Properties/AssemblyInfo.cs b/src/Microsoft.AspNet.WebUtilities/Properties/AssemblyInfo.cs
index 025a94598c..b2437d9ad6 100644
--- a/src/Microsoft.AspNet.WebUtilities/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.AspNet.WebUtilities/Properties/AssemblyInfo.cs
@@ -2,5 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Reflection;
+using System.Resources;
 
-[assembly: AssemblyMetadata("Serviceable", "True")]
\ No newline at end of file
+[assembly: AssemblyMetadata("Serviceable", "True")]
+[assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.Framework.Primitives/Properties/AssemblyInfo.cs b/src/Microsoft.Framework.Primitives/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000000..b2437d9ad6
--- /dev/null
+++ b/src/Microsoft.Framework.Primitives/Properties/AssemblyInfo.cs
@@ -0,0 +1,8 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System.Reflection;
+using System.Resources;
+
+[assembly: AssemblyMetadata("Serviceable", "True")]
+[assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.Framework.Primitives/project.json b/src/Microsoft.Framework.Primitives/project.json
index 3b870f7173..c504f822d2 100644
--- a/src/Microsoft.Framework.Primitives/project.json
+++ b/src/Microsoft.Framework.Primitives/project.json
@@ -16,7 +16,8 @@
     "dnx451": { },
     "dnxcore50": {
       "dependencies": {
-        "System.Collections": "4.0.11-beta-*"
+        "System.Collections": "4.0.11-beta-*",
+        "System.Resources.ResourceManager": "4.0.1-beta-"
       }
     }
   }
diff --git a/src/Microsoft.Framework.WebEncoders.Core/Properties/AssemblyInfo.cs b/src/Microsoft.Framework.WebEncoders.Core/Properties/AssemblyInfo.cs
index c09b9bdbba..48510ed635 100644
--- a/src/Microsoft.Framework.WebEncoders.Core/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.Framework.WebEncoders.Core/Properties/AssemblyInfo.cs
@@ -1,9 +1,10 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-using System;
 using System.Reflection;
+using System.Resources;
 using System.Runtime.CompilerServices;
 
 [assembly: InternalsVisibleTo("Microsoft.Framework.WebEncoders.Tests")]
 [assembly: AssemblyMetadata("Serviceable", "True")]
+[assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.Framework.WebEncoders.Core/project.json b/src/Microsoft.Framework.WebEncoders.Core/project.json
index 7cee739e6e..b2ad614378 100644
--- a/src/Microsoft.Framework.WebEncoders.Core/project.json
+++ b/src/Microsoft.Framework.WebEncoders.Core/project.json
@@ -20,6 +20,7 @@
                 "System.Diagnostics.Debug": "4.0.11-beta-*",
                 "System.IO": "4.0.11-beta-*",
                 "System.Reflection": "4.0.10-*",
+                "System.Resources.ResourceManager": "4.0.1-beta-",
                 "System.Runtime.Extensions": "4.0.11-beta-*",
                 "System.Threading": "4.0.11-beta-*"
             }
diff --git a/src/Microsoft.Framework.WebEncoders/Properties/AssemblyInfo.cs b/src/Microsoft.Framework.WebEncoders/Properties/AssemblyInfo.cs
index 025a94598c..b2437d9ad6 100644
--- a/src/Microsoft.Framework.WebEncoders/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.Framework.WebEncoders/Properties/AssemblyInfo.cs
@@ -2,5 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Reflection;
+using System.Resources;
 
-[assembly: AssemblyMetadata("Serviceable", "True")]
\ No newline at end of file
+[assembly: AssemblyMetadata("Serviceable", "True")]
+[assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.Net.Http.Headers/Properties/AssemblyInfo.cs b/src/Microsoft.Net.Http.Headers/Properties/AssemblyInfo.cs
index 025a94598c..b2437d9ad6 100644
--- a/src/Microsoft.Net.Http.Headers/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.Net.Http.Headers/Properties/AssemblyInfo.cs
@@ -2,5 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Reflection;
+using System.Resources;
 
-[assembly: AssemblyMetadata("Serviceable", "True")]
\ No newline at end of file
+[assembly: AssemblyMetadata("Serviceable", "True")]
+[assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file