diff --git a/samples/MvcSample.Web/Startup.cs b/samples/MvcSample.Web/Startup.cs
index a16a491b34..a3565f5474 100644
--- a/samples/MvcSample.Web/Startup.cs
+++ b/samples/MvcSample.Web/Startup.cs
@@ -3,6 +3,7 @@
 
 using System;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Localization;
 using Microsoft.AspNet.Mvc;
 using Microsoft.AspNet.Mvc.Razor;
 using Microsoft.Extensions.DependencyInjection;
@@ -38,7 +39,7 @@ namespace MvcSample.Web
             app.UseStatusCodePages();
             app.UseFileServer();
 
-            app.UseRequestLocalization();
+            app.UseRequestLocalization(new RequestCulture("en-US"));
 
             app.UseSession();
             app.UseMvc(routes =>
diff --git a/test/WebSites/LocalizationWebSite/Startup.cs b/test/WebSites/LocalizationWebSite/Startup.cs
index f1d72b66b2..b1094b611e 100644
--- a/test/WebSites/LocalizationWebSite/Startup.cs
+++ b/test/WebSites/LocalizationWebSite/Startup.cs
@@ -1,7 +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.Collections.Generic;
+using System.Globalization;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Localization;
 using Microsoft.Extensions.DependencyInjection;
 
 namespace LocalizationWebSite
@@ -20,7 +23,20 @@ namespace LocalizationWebSite
         {
             app.UseCultureReplacer();
 
-            app.UseRequestLocalization();
+            var options = new RequestLocalizationOptions
+            {
+                SupportedCultures = new List<CultureInfo>
+                {
+                    new CultureInfo("fr"),
+                    new CultureInfo("en-GB")
+                },
+                SupportedUICultures = new List<CultureInfo>
+                {
+                    new CultureInfo("fr"),
+                    new CultureInfo("en-GB")
+                }
+            };
+            app.UseRequestLocalization(options, new RequestCulture("en-US"));
 
             app.UseMvcWithDefaultRoute();
         }
diff --git a/test/WebSites/RazorWebSite/Startup.cs b/test/WebSites/RazorWebSite/Startup.cs
index d41b4509ab..a80a09a384 100644
--- a/test/WebSites/RazorWebSite/Startup.cs
+++ b/test/WebSites/RazorWebSite/Startup.cs
@@ -1,8 +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.Collections.Generic;
 using System.Globalization;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Localization;
 using Microsoft.AspNet.Mvc;
 using Microsoft.AspNet.Mvc.Razor;
 using Microsoft.Extensions.DependencyInjection;
@@ -36,8 +38,23 @@ namespace RazorWebSite
 
         public void Configure(IApplicationBuilder app)
         {
-            app.UseRequestLocalization();
-            
+            var options = new RequestLocalizationOptions
+            {
+                SupportedCultures = new List<CultureInfo>
+                {
+                    new CultureInfo("fr"),
+                    new CultureInfo("en-GB"),
+                    new CultureInfo("en-US")
+                },
+                SupportedUICultures = new List<CultureInfo>
+                {
+                    new CultureInfo("fr"),
+                    new CultureInfo("en-GB"),
+                    new CultureInfo("en-US")
+                }
+            };
+            app.UseRequestLocalization(options, new RequestCulture("en-GB", "en-US"));
+
             app.UseMvcWithDefaultRoute();
         }
     }