diff --git a/doc/HowTo.md b/doc/HowTo.md
index fd78bf70..d1ed5402 100644
--- a/doc/HowTo.md
+++ b/doc/HowTo.md
@@ -10,7 +10,7 @@ This makes it super-easy to subclass the controllers and add some of your own be
 ### Example: Updating :last\_viewed\_at when a Post is viewed
 
     class PostsController < Blogit::PostsController
-    
+      helper Blogit::Engine.routes.url_helpers
       def show
         super do |post|
           post.touch(:last_viewed_at)
@@ -25,4 +25,4 @@ Blogit comes with a CSS file for instant code syntax highlighting. Simply includ
 
     /*
      *= require pygments
-    */
\ No newline at end of file
+    */