diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 53d94bd97..580340ca6 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -467,7 +467,6 @@ Layout/SpaceInsideStringInterpolation:
     - 'app/models/mail_handler.rb'
     - 'lib/redmine/core_ext/string/inflections.rb'
     - 'lib/redmine/wiki_formatting/textile/redcloth3.rb'
-    - 'test/functional/issues_controller_test.rb'
     - 'test/integration/admin_test.rb'
 
 Lint/AmbiguousBlockAssociation:
diff --git a/test/functional/issues_controller_test.rb b/test/functional/issues_controller_test.rb
index 826fd16fc..c19037255 100644
--- a/test/functional/issues_controller_test.rb
+++ b/test/functional/issues_controller_test.rb
@@ -5091,7 +5091,7 @@ class IssuesControllerTest < Redmine::ControllerTest
     mail = ActionMailer::Base.deliveries.last
     assert_mail_body_match "Status changed from New to Assigned", mail
     # subject should contain the new status
-    assert mail.subject.include?("(#{ IssueStatus.find(2).name })")
+    assert mail.subject.include?("(#{IssueStatus.find(2).name})")
   end
 
   def test_put_update_with_note_only