diff --git a/activesupport/lib/active_support/core_ext/enumerable.rb b/activesupport/lib/active_support/core_ext/enumerable.rb
index f2dd34cc55afc9b6f0b4c81a4eb71baf6d164070..ddb4f3012fcac77b543b9fd5b13d1e24c071fe5e 100644
--- a/activesupport/lib/active_support/core_ext/enumerable.rb
+++ b/activesupport/lib/active_support/core_ext/enumerable.rb
@@ -76,10 +76,10 @@ def sum(identity = 0, &block)
   #
   #   (1..5).each_with_object(1) { |value, memo| memo *= value } # => 1
   #
-  def each_with_object(memo, &block)
+  def each_with_object(memo)
     return to_enum :each_with_object, memo unless block_given?
     each do |element|
-      block.call(element, memo)
+      yield element, memo
     end
     memo
   end unless [].respond_to?(:each_with_object)