diff --git a/activesupport/lib/active_support/core_ext/module/aliasing.rb b/activesupport/lib/active_support/core_ext/module/aliasing.rb
index 0280878b77..1894e3b0a2 100644
--- a/activesupport/lib/active_support/core_ext/module/aliasing.rb
+++ b/activesupport/lib/active_support/core_ext/module/aliasing.rb
@@ -50,7 +50,7 @@ class Module
   #     # has a title attribute
   #   end
   #
-  #   class Email < ActiveRecord::Base
+  #   class Email < Content
   #     alias_attribute :subject, :title
   #   end
   #