diff --git a/railties/guides/rails_guides/generator.rb b/railties/guides/rails_guides/generator.rb
index 2f0718af75..7c8d26a1ea 100644
--- a/railties/guides/rails_guides/generator.rb
+++ b/railties/guides/rails_guides/generator.rb
@@ -1,4 +1,5 @@
 require 'set'
+require 'fileutils'
 
 module RailsGuides
   class Generator