diff --git a/htdocs/commande/list.php b/htdocs/commande/list.php
index 350674370e9..264613ac597 100644
--- a/htdocs/commande/list.php
+++ b/htdocs/commande/list.php
@@ -2319,8 +2319,11 @@ if ($resql) {
 
 					$numlines = count($generic_commande->lines); // Loop on each line of order
 					for ($lig = 0; $lig < $numlines; $lig++) {
-						$reliquat = $generic_commande->lines[$lig]->qty - $generic_commande->expeditions[$generic_commande->lines[$lig]->id];
-
+						if (isset($generic_commande->expeditions[$generic_commande->lines[$lig]->id])) {
+							$reliquat =  $generic_commande->lines[$lig]->qty - $generic_commande->expeditions[$generic_commande->lines[$lig]->id];
+						} else {
+							$reliquat = $generic_commande->lines[$lig]->qty;
+						}
 						if ($generic_commande->lines[$lig]->product_type == 0 && $generic_commande->lines[$lig]->fk_product > 0) {  // If line is a product and not a service
 							$nbprod++; // order contains real products
 							$generic_product->id = $generic_commande->lines[$lig]->fk_product;