diff --git a/htdocs/user/list.php b/htdocs/user/list.php
index a3b69d1dff8..3e1a8ff7f6d 100644
--- a/htdocs/user/list.php
+++ b/htdocs/user/list.php
@@ -371,7 +371,7 @@ if ($search_supervisor > 0) {
 if ($search_thirdparty != '') {
 	$sql .= natural_search(array('s.nom'), $search_thirdparty);
 }
-if ($search_warehouse != '') {
+if ($search_warehouse > 0) {
 	$sql .= natural_search(array('u.fk_warehouse'), $search_warehouse);
 }
 if ($search_login != '') {