diff --git a/htdocs/contrat/services_list.php b/htdocs/contrat/services_list.php
index ce9d0aa47a4..24b6e643b51 100644
--- a/htdocs/contrat/services_list.php
+++ b/htdocs/contrat/services_list.php
@@ -479,7 +479,7 @@ if ($mode == "5") {
 
 print_barre_liste($title, $page, $_SERVER["PHP_SELF"], $param, $sortfield, $sortorder, $massactionbutton, $num, $nbtotalofrecords, 'contract', 0, '', '', $limit);
 
-if (isset($sall)) {
+if (!empty($sall)) {
 	foreach ($fieldstosearchall as $key => $val) {
 		$fieldstosearchall[$key] = $langs->trans($val);
 	}