diff --git a/htdocs/ticket/class/actions_ticket.class.php b/htdocs/ticket/class/actions_ticket.class.php
index 6dc946ebad3..3411672bd90 100644
--- a/htdocs/ticket/class/actions_ticket.class.php
+++ b/htdocs/ticket/class/actions_ticket.class.php
@@ -23,7 +23,7 @@
  *    \brief      File Class ticket
  */
 
-require_once "ticket.class.php";
+require_once DOL_DOCUMENT_ROOT . '/ticket/class/ticket.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/files.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/extrafields.class.php';
 require_once DOL_DOCUMENT_ROOT . '/contrat/class/contrat.class.php';