diff --git a/activesupport/lib/active_support/proxy_object.rb b/activesupport/lib/active_support/proxy_object.rb
index 8ac9bd71f181f..fc851409dc722 100644
--- a/activesupport/lib/active_support/proxy_object.rb
+++ b/activesupport/lib/active_support/proxy_object.rb
@@ -3,8 +3,8 @@
 module ActiveSupport
   # = Active Support Proxy \Object
   #
-  # A class with no predefined methods that behaves similarly to Builder's
-  # BlankSlate. Used for proxy classes.
+  # A class with no predefined methods that behaves similarly to Ruby's
+  # BasicObject. Used for proxy classes.
   class ProxyObject < ::BasicObject
     undef_method :==
     undef_method :equal?