diff --git a/htdocs/fourn/class/fournisseur.commande.class.php b/htdocs/fourn/class/fournisseur.commande.class.php
index 440a46c1c62..ad55cf8c5a9 100644
--- a/htdocs/fourn/class/fournisseur.commande.class.php
+++ b/htdocs/fourn/class/fournisseur.commande.class.php
@@ -2400,7 +2400,7 @@ class CommandeFournisseur extends CommonOrder
 			}
 		}
 
-		if ($nb === 0) return $langs->trans('Undefined');
+		if ($nb === 0) return '';
 		else return $nb.' '.$langs->trans('Days');
 	}