Index: MvcContrib.TestHelper/Extensions/RouteTestingExtensions.cs
===================================================================
--- MvcContrib.TestHelper/Extensions/RouteTestingExtensions.cs	(revision 903)
+++ MvcContrib.TestHelper/Extensions/RouteTestingExtensions.cs	(working copy)
@@ -138,7 +138,7 @@
             foreach(var routeValueKey in routeValues.Keys)
             {
                 if(string.Equals(routeValueKey, key, StringComparison.InvariantCultureIgnoreCase))
-                    return routeValues[routeValueKey] as string;
+                    return routeValues[routeValueKey].ToString();
             }
 
             return null;