diff --git a/railties/guides/source/performance_testing.textile b/railties/guides/source/performance_testing.textile
index d3b0f84a86..a4187a3135 100644
--- a/railties/guides/source/performance_testing.textile
+++ b/railties/guides/source/performance_testing.textile
@@ -66,7 +66,7 @@ resources :posts
 # home_controller.rb
 class HomeController < ApplicationController
   def dashboard
-    @users = User.last_ten(:include => :avatars)
+    @users = User.last_ten.includes(:avatars)
     @posts = Post.all_today
   end
 end