diff --git a/htdocs/core/class/hookmanager.class.php b/htdocs/core/class/hookmanager.class.php
index e24bce5e247..1ea5daf9be3 100644
--- a/htdocs/core/class/hookmanager.class.php
+++ b/htdocs/core/class/hookmanager.class.php
@@ -171,6 +171,7 @@ class HookManager
 				'formattachOptions',
 				'formBuilddocLineOptions',
 				'formatNotificationMessage',
+			    'formConfirm',
 				'getAccessForbiddenMessage',
 				'getDirList',
 				'getFormMail',