diff --git a/htdocs/fourn/commande/card.php b/htdocs/fourn/commande/card.php
index 12668bdd55c..2efae8b1454 100644
--- a/htdocs/fourn/commande/card.php
+++ b/htdocs/fourn/commande/card.php
@@ -156,7 +156,7 @@ if ($reshook < 0) {
 }
 
 if (empty($reshook)) {
-	$backurlforlist = DOL_URL_ROOT.'/fourn/commande/list.php'.($socid > 0 ? '&socid='.((int) $socid)  : '');
+	$backurlforlist = DOL_URL_ROOT.'/fourn/commande/list.php'.($socid > 0 ? '?socid='.((int) $socid)  : '');
 
 	if (empty($backtopage) || ($cancel && empty($id))) {
 		if (empty($backtopage) || ($cancel && strpos($backtopage, '__ID__'))) {