diff --git a/htdocs/langs/en_US/products.lang b/htdocs/langs/en_US/products.lang
index b21fd88539e..f4cd0824d70 100644
--- a/htdocs/langs/en_US/products.lang
+++ b/htdocs/langs/en_US/products.lang
@@ -297,3 +297,4 @@ PropalMergePdfProductChooseFile=Select PDF files
 IncludingProductWithTag=Including product with tag
 DefaultPriceRealPriceMayDependOnCustomer=Default price, real price may depend on customer
 WarningSelectOneDocument=Please select at least one document
+DefaultUnitToShow=Units
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