diff --git a/htdocs/langs/en_US/stocks.lang b/htdocs/langs/en_US/stocks.lang
index e5fd3db9260..413eebd4d86 100644
--- a/htdocs/langs/en_US/stocks.lang
+++ b/htdocs/langs/en_US/stocks.lang
@@ -119,7 +119,7 @@ CurentlyUsingPhysicalStock=Physical stock
 RuleForStockReplenishment=Rule for stocks replenishment
 SelectProductWithNotNullQty=Select at least one product with a qty not null and a vendor
 AlertOnly= Alerts only
-IncludeProductWithUndefinedAlerts = Include products with no defined alerts
+IncludeProductWithUndefinedAlerts = Include also negative stock for products with no desired quantity defined, to restore them to 0
 WarehouseForStockDecrease=The warehouse <b>%s</b> will be used for stock decrease
 WarehouseForStockIncrease=The warehouse <b>%s</b> will be used for stock increase
 ForThisWarehouse=For this warehouse