diff --git a/activesupport/lib/active_support/file_update_checker.rb b/activesupport/lib/active_support/file_update_checker.rb
index dc7434fcacb3a621be43554d44eccaecc87eb7bc..8708a502e6246a7d5320590c927a3443ba4c694d 100644
--- a/activesupport/lib/active_support/file_update_checker.rb
+++ b/activesupport/lib/active_support/file_update_checker.rb
@@ -23,7 +23,7 @@ module ActiveSupport
   #     I18n.reload!
   #   end
   #
-  #   ActionDispatch::Reloader.to_prepare do
+  #   ActiveSupport::Reloader.to_prepare do
   #     i18n_reloader.execute_if_updated
   #   end
   class FileUpdateChecker