diff --git a/src/Microsoft.AspNet.Routing/BuilderExtensions.cs b/src/Microsoft.AspNet.Routing/BuilderExtensions.cs
index 1c8b066521..796ab04192 100644
--- a/src/Microsoft.AspNet.Routing/BuilderExtensions.cs
+++ b/src/Microsoft.AspNet.Routing/BuilderExtensions.cs
@@ -9,8 +9,7 @@ namespace Microsoft.AspNet.Builder
     {
         public static IBuilder UseRouter([NotNull] this IBuilder builder, [NotNull] IRouter router)
         {
-            builder.Use((next) => new RouterMiddleware(next, router).Invoke);
-            return builder;
+            return builder.Use((next) => new RouterMiddleware(next, router).Invoke);
         }
     }
 }
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