diff --git a/htdocs/langs/en_US/stocks.lang b/htdocs/langs/en_US/stocks.lang
index 75abbff413af71b7d60f84ef95eedaa370834385..7a28c1a0d1d56af0843c46ff386ed48c5af226fb 100644
--- a/htdocs/langs/en_US/stocks.lang
+++ b/htdocs/langs/en_US/stocks.lang
@@ -117,3 +117,8 @@ SelectProductInAndOutWareHouse=Select a product, a quantity, a source warehouse
 RecordMovement=Record transfert
 ReceivingForSameOrder=Receivings for this order
 StockMovementRecorded=Stock movements recorded
+RuleForStockAvailability=Rules on stock requirements
+StockMustBeEnoughForInvoice=Stock level must be enough to add product/service into invoice 
+StockMustBeEnoughForOrder=Stock level must be enough to add product/service into order
+StockMustBeEnoughForShipment= Stock level must be enough to add product/service into shipment
+