diff --git a/htdocs/product/class/product.class.php b/htdocs/product/class/product.class.php
index 9bdb286db25..06ff0bd3ee6 100644
--- a/htdocs/product/class/product.class.php
+++ b/htdocs/product/class/product.class.php
@@ -3925,7 +3925,7 @@ class Product extends CommonObject
 	 */
     function load_virtual_stock()
     {
-        global $conf, $user, $langs;
+        global $conf, $action;
 
         $stock_commande_client=0;
         $stock_commande_fournisseur=0;