diff --git a/aio/content/guide/router-tutorial-toh.md b/aio/content/guide/router-tutorial-toh.md
index bbdfa275f98..28f3939ecb2 100644
--- a/aio/content/guide/router-tutorial-toh.md
+++ b/aio/content/guide/router-tutorial-toh.md
@@ -578,6 +578,8 @@ Follow these steps:
 
     *   Change the component class name to `HeroListComponent`.
     *   Change the `selector` to `app-hero-list`.
+    *   Change the `templateUrl` to `./hero-list.component.html`.
+    *   Change the `styleUrls` to `./hero-list.component.css`.
 
         <div class="alert is-helpful">