diff --git a/config/application.rb b/config/application.rb
index 4417a999c..cadddcf1a 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -30,7 +30,7 @@ module Zammad
       'observer::_ticket::_article::_communicate_email',
       'observer::_ticket::_article::_communicate_facebook',
       'observer::_ticket::_article::_communicate_twitter',
-      'observer::_ticket::_article::_email_signature_detection',
+      'observer::_ticket::_article::_signature_detection',
       'observer::_ticket::_notification',
       'observer::_ticket::_reset_new_state',
       'observer::_ticket::_escalation_calculation',