diff --git a/activesupport/lib/active_support/evented_file_update_checker.rb b/activesupport/lib/active_support/evented_file_update_checker.rb
index f54f88eb0a..ed4604c2df 100644
--- a/activesupport/lib/active_support/evented_file_update_checker.rb
+++ b/activesupport/lib/active_support/evented_file_update_checker.rb
@@ -17,7 +17,7 @@ module ActiveSupport
   #
   # Example:
   #
-  #     checker = EventedFileUpdateChecker.new(["/tmp/foo"], -> { puts "changed" })
+  #     checker = ActiveSupport::EventedFileUpdateChecker.new(["/tmp/foo"]) { puts "changed" }
   #     checker.updated?
   #     # => false
   #     checker.execute_if_updated