diff --git a/src/Microsoft.AspNet.Identity.SqlServer/IdentityEntityFrameworkServiceCollectionExtensions.cs b/src/Microsoft.AspNet.Identity.SqlServer/IdentityEntityFrameworkServiceCollectionExtensions.cs
index 2cbd46319d..a75a3ca796 100644
--- a/src/Microsoft.AspNet.Identity.SqlServer/IdentityEntityFrameworkServiceCollectionExtensions.cs
+++ b/src/Microsoft.AspNet.Identity.SqlServer/IdentityEntityFrameworkServiceCollectionExtensions.cs
@@ -63,7 +63,7 @@ namespace Microsoft.Framework.DependencyInjection
             return builder;
         }
 
-        public static IdentityBuilder<TUser, TRole> AddIdentitySqlServer<TContext, TUser, TRole, TKey>(this ServiceCollection services)
+        public static IdentityBuilder<TUser, TRole> AddIdentitySqlServer<TContext, TUser, TRole, TKey>(this IServiceCollection services)
             where TUser : IdentityUser<TKey>, new()
             where TRole : IdentityRole<TKey>, new()
             where TContext : DbContext