diff --git a/htdocs/expedition/card.php b/htdocs/expedition/card.php
index 7fc4aeabc2987..2cfef0ff9660e 100644
--- a/htdocs/expedition/card.php
+++ b/htdocs/expedition/card.php
@@ -1247,7 +1247,7 @@
 					}
 
 					$warehouseObject = null;
-					if (count($warehousePicking) == 1 || !($line->fk_product > 0) || !isModEnabled('stock')) {     // If warehouse was already selected or if product is not a predefined, we go into this part with no multiwarehouse selection
+					if (count($warehousePicking) == 1 || !empty($conf->global->STOCK_ALLOW_NEGATIVE_TRANSFER) || !($line->fk_product > 0) || !isModEnabled('stock')) {     // If warehouse was already selected or if product is not a predefined, we go into this part with no multiwarehouse selection
 						print '<!-- Case warehouse already known or product not a predefined product -->';
 						//ship from preselected location
 						$stock = + (isset($product->stock_warehouse[$warehouse_id]->real) ? $product->stock_warehouse[$warehouse_id]->real : 0); // Convert to number