diff --git a/htdocs/fourn/facture/fiche.php b/htdocs/fourn/facture/fiche.php
index 468a5c91e79..6f80f5b0303 100644
--- a/htdocs/fourn/facture/fiche.php
+++ b/htdocs/fourn/facture/fiche.php
@@ -191,7 +191,7 @@ elseif ($action == 'setdate_lim_reglement' && $user->rights->fournisseur->factur
 {
     $object->fetch($id);
     $object->date_echeance=dol_mktime(12,0,0,$_POST['date_lim_reglementmonth'],$_POST['date_lim_reglementday'],$_POST['date_lim_reglementyear']);
-    if ($object->date_echeance < $object->date)
+    if (! empty($object->date_echeance) && $object->date_echeance < $object->date)
     {
     	$object->date_echeance=$object->date;
     	setEventMessage($langs->trans("DatePaymentTermCantBeLowerThanObjectDate"),'warnings');