diff --git a/activesupport/lib/active_support/secure_compare_rotator.rb b/activesupport/lib/active_support/secure_compare_rotator.rb
index 269703c34a..b5869825db 100644
--- a/activesupport/lib/active_support/secure_compare_rotator.rb
+++ b/activesupport/lib/active_support/secure_compare_rotator.rb
@@ -17,7 +17,7 @@ module ActiveSupport
   #
   #   class MyController < ApplicationController
   #     def authenticate_request
-  #       rotator = ActiveSupport::SecureComparerotator.new('new_password')
+  #       rotator = ActiveSupport::SecureCompareRotator.new('new_password')
   #       rotator.rotate('old_password')
   #
   #       authenticate_or_request_with_http_basic do |username, password|