diff --git a/htdocs/core/modules/DolibarrModules.class.php b/htdocs/core/modules/DolibarrModules.class.php
index 57c2eb780f00b..2eaef0842e9c6 100644
--- a/htdocs/core/modules/DolibarrModules.class.php
+++ b/htdocs/core/modules/DolibarrModules.class.php
@@ -1606,6 +1606,7 @@ public function insert_cronjobs()
 		// phpcs:enable
 		include_once DOL_DOCUMENT_ROOT . '/core/class/infobox.class.php';
 		include_once DOL_DOCUMENT_ROOT . '/cron/class/cronjob.class.php';
+		include_once DOL_DOCUMENT_ROOT . '/user/class/user.class.php';
 
 		global $conf, $user;