diff --git a/public/ticket/ticket_success.php b/public/ticket/ticket_success.php
index 515b1aa14..9c37220a3 100644
--- a/public/ticket/ticket_success.php
+++ b/public/ticket/ticket_success.php
@@ -47,7 +47,7 @@
 
 // Libraries
 require_once DOL_DOCUMENT_ROOT . '/ticket/class/ticket.class.php';
-
+require_once DOL_DOCUMENT_ROOT . '/user/class/user.class.php';
 require_once '../../lib/digiriskdolibarr_function.lib.php';
 
 global $db, $langs, $mysoc;