diff --git a/inc/field/glpiselectfield.class.php b/inc/field/glpiselectfield.class.php
index ced1b3e36..f10168244 100644
--- a/inc/field/glpiselectfield.class.php
+++ b/inc/field/glpiselectfield.class.php
@@ -39,6 +39,7 @@
 use Entity;
 use CommonTreeDropdown;
 use CommonDBTM;
+use Ticket;
 use User;
 
 use GlpiPlugin\Formcreator\Exception\ComparisonException;