diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 2439f575e..ecec91511 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -384,7 +384,6 @@ Lint/Loop:
 
 Lint/ParenthesesAsGroupedExpression:
   Exclude:
-    - 'lib/redmine/field_format.rb'
     - 'test/functional/account_controller_test.rb'
     - 'test/functional/email_addresses_controller_test.rb'
     - 'test/functional/my_controller_test.rb'
diff --git a/lib/redmine/field_format.rb b/lib/redmine/field_format.rb
index bc2def962..2fcd7b79b 100644
--- a/lib/redmine/field_format.rb
+++ b/lib/redmine/field_format.rb
@@ -271,8 +271,8 @@ module Redmine
         url = custom_field.url_pattern.to_s.dup
         url.gsub!('%value%') {URI.encode value.to_s}
         url.gsub!('%id%') {URI.encode customized.id.to_s}
-        url.gsub!('%project_id%') {URI.encode (customized.respond_to?(:project) ? customized.project.try(:id) : nil).to_s}
-        url.gsub!('%project_identifier%') {URI.encode (customized.respond_to?(:project) ? customized.project.try(:identifier) : nil).to_s}
+        url.gsub!('%project_id%') {URI.encode((customized.respond_to?(:project) ? customized.project.try(:id) : nil).to_s)}
+        url.gsub!('%project_identifier%') {URI.encode((customized.respond_to?(:project) ? customized.project.try(:identifier) : nil).to_s)}
         if custom_field.regexp.present?
           url.gsub!(%r{%m(\d+)%}) do
             m = $1.to_i