diff --git a/src/Microsoft.AspNet.Localization/project.json b/src/Microsoft.AspNet.Localization/project.json
index cf3fff5eac..4fcd8ec90c 100644
--- a/src/Microsoft.AspNet.Localization/project.json
+++ b/src/Microsoft.AspNet.Localization/project.json
@@ -6,7 +6,8 @@
     "url": "https://github.com/aspnet/localization"
   },
   "compilationOptions": {
-    "warningsAsErrors": true
+    "warningsAsErrors": true,
+    "keyFile": "../../tools/Key.snk"
   },
   "dependencies": {
     "Microsoft.AspNet.Http.Extensions": "1.0.0-*",
diff --git a/src/Microsoft.Extensions.Globalization.CultureInfoCache/project.json b/src/Microsoft.Extensions.Globalization.CultureInfoCache/project.json
index 7030cda7d3..0114a51be0 100644
--- a/src/Microsoft.Extensions.Globalization.CultureInfoCache/project.json
+++ b/src/Microsoft.Extensions.Globalization.CultureInfoCache/project.json
@@ -6,7 +6,8 @@
     "url": "https://github.com/aspnet/localization"
   },
   "compilationOptions": {
-    "warningsAsErrors": true
+    "warningsAsErrors": true,
+    "keyFile": "../../tools/Key.snk"
   },
   "frameworks": {
     "net451": {},
diff --git a/src/Microsoft.Extensions.Localization.Abstractions/project.json b/src/Microsoft.Extensions.Localization.Abstractions/project.json
index ad4613c532..91a285b1c7 100644
--- a/src/Microsoft.Extensions.Localization.Abstractions/project.json
+++ b/src/Microsoft.Extensions.Localization.Abstractions/project.json
@@ -6,7 +6,8 @@
     "url": "https://github.com/aspnet/localization"
   },
   "compilationOptions": {
-    "warningsAsErrors": true
+    "warningsAsErrors": true,
+    "keyFile": "../../tools/Key.snk"
   },
   "frameworks": {
     "net451": {},
diff --git a/src/Microsoft.Extensions.Localization/Properties/AssemblyInfo.cs b/src/Microsoft.Extensions.Localization/Properties/AssemblyInfo.cs
index 2f92021c0a..fc0eb07f8a 100644
--- a/src/Microsoft.Extensions.Localization/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.Extensions.Localization/Properties/AssemblyInfo.cs
@@ -5,6 +5,6 @@ using System.Reflection;
 using System.Resources;
 using System.Runtime.CompilerServices;
 
-[assembly: InternalsVisibleTo("Microsoft.Extensions.Localization.Tests")]
+[assembly: InternalsVisibleTo("Microsoft.Extensions.Localization.Tests, PublicKey=0024000004800000940000000602000000240000525341310004000001000100f33a29044fa9d740c9b3213a93e57c84b472c84e0b8a0e1ae48e67a9f8f6de9d5f7f3d52ac23e48ac51801f1dc950abe901da34d2a9e3baadb141a17c77ef3c565dd5ee5054b91cf63bb3c6ab83f72ab3aafe93d0fc3c2348b764fafb0b1c0733de51459aeab46580384bf9d74c4e28164b7cde247f891ba07891c9d872ad2bb")]
 [assembly: AssemblyMetadata("Serviceable", "True")]
 [assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.Extensions.Localization/project.json b/src/Microsoft.Extensions.Localization/project.json
index 84fc5e5ecb..592230ea6c 100644
--- a/src/Microsoft.Extensions.Localization/project.json
+++ b/src/Microsoft.Extensions.Localization/project.json
@@ -6,7 +6,8 @@
     "url": "https://github.com/aspnet/localization"
   },
   "compilationOptions": {
-    "warningsAsErrors": true
+    "warningsAsErrors": true,
+    "keyFile": "../../tools/Key.snk"
   },
   "dependencies": {
     "Microsoft.Extensions.PlatformAbstractions": "1.0.0-*",
diff --git a/test/Microsoft.Extensions.Localization.Tests/project.json b/test/Microsoft.Extensions.Localization.Tests/project.json
index 84092ff34a..da5585f792 100644
--- a/test/Microsoft.Extensions.Localization.Tests/project.json
+++ b/test/Microsoft.Extensions.Localization.Tests/project.json
@@ -1,4 +1,8 @@
 {
+  "compilationOptions": {
+    "warningsAsErrors": true,
+    "keyFile": "../../tools/Key.snk"
+  },
   "dependencies": {
     "Microsoft.Extensions.DependencyInjection": "1.0.0-*",
     "Microsoft.Extensions.Localization": "1.0.0-*",
diff --git a/tools/Key.snk b/tools/Key.snk
new file mode 100644
index 0000000000..e10e4889c1
Binary files /dev/null and b/tools/Key.snk differ