diff --git a/guides/source/testing.md b/guides/source/testing.md
index f178ca87e9..7747318d32 100644
--- a/guides/source/testing.md
+++ b/guides/source/testing.md
@@ -830,7 +830,7 @@ Above, the `setup` method is called before each test and so `@post` is available
 Let's see the earlier example by specifying `setup` callback by specifying a method name as a symbol:
 
 ```ruby
-require '../test_helper'
+require 'test_helper'
 
 class PostsControllerTest < ActionController::TestCase