diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index b6a9a0cd4..8458b87ca 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1152,13 +1152,6 @@ Style/MethodCallWithoutArgsParentheses:
     - 'lib/redmine/scm/adapters/cvs_adapter.rb'
     - 'lib/redmine/scm/adapters/filesystem_adapter.rb'
 
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: require_parentheses, require_no_parentheses, require_no_parentheses_except_multiline
-Style/MethodDefParentheses:
-  Exclude:
-    - 'lib/redmine/menu_manager.rb'
-
 Style/MethodMissingSuper:
   Exclude:
     - 'lib/redmine/views/builders/structure.rb'
diff --git a/lib/redmine/menu_manager.rb b/lib/redmine/menu_manager.rb
index 3b8752a85..db8e3e79c 100644
--- a/lib/redmine/menu_manager.rb
+++ b/lib/redmine/menu_manager.rb
@@ -359,7 +359,7 @@ module Redmine
         @children.inject(1) {|sum, node| sum + node.size}
       end
 
-      def each &block
+      def each(&block)
         yield self
         children { |child| child.each(&block) }
       end