diff --git a/activesupport/lib/active_support/core_ext/hash/except.rb b/activesupport/lib/active_support/core_ext/hash/except.rb
index 5a61906222ff276cf0ca48b09bf0cb8d70833d6e..c82da3c6c244ad98987556028bd06914032e095f 100644
--- a/activesupport/lib/active_support/core_ext/hash/except.rb
+++ b/activesupport/lib/active_support/core_ext/hash/except.rb
@@ -4,13 +4,6 @@ class Hash
   #
   #   @person.update_attributes(params[:person].except(:admin))
   #
-  # If the receiver responds to +convert_key+, the method is called on each of the
-  # arguments. This allows +except+ to play nice with hashes with indifferent access
-  # for instance:
-  #
-  #   {:a => 1}.with_indifferent_access.except(:a)  # => {}
-  #   {:a => 1}.with_indifferent_access.except('a') # => {}
-  #
   def except(*keys)
     dup.except!(*keys)
   end