diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 6d965654d..a2d77a547 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -817,7 +817,6 @@ Performance/RedundantBlockCall:
 # Cop supports --auto-correct.
 Performance/RedundantMatch:
   Exclude:
-    - 'app/controllers/auto_completes_controller.rb'
     - 'app/models/issue_relation.rb'
     - 'lib/redmine/wiki_formatting/textile/formatter.rb'
     - 'lib/redmine/wiki_formatting/textile/redcloth3.rb'
diff --git a/app/controllers/auto_completes_controller.rb b/app/controllers/auto_completes_controller.rb
index e83374c9b..336885349 100644
--- a/app/controllers/auto_completes_controller.rb
+++ b/app/controllers/auto_completes_controller.rb
@@ -30,8 +30,8 @@ class AutoCompletesController < ApplicationController
     scope = scope.open(status == 'o') if status.present?
     scope = scope.where.not(:id => issue_id.to_i) if issue_id.present?
     if q.present?
-      if q.match(/\A#?(\d+)\z/)
-        issues << scope.find_by_id($1.to_i)
+      if q =~ /\A#?(\d+)\z/
+        issues << scope.find_by(:id => $1.to_i)
       end
       issues += scope.like(q).order(:id => :desc).limit(10).to_a
       issues.compact!