diff --git a/htdocs/langs/en_US/compta.lang b/htdocs/langs/en_US/compta.lang
index 0e61076345b..82ef7f0be9a 100644
--- a/htdocs/langs/en_US/compta.lang
+++ b/htdocs/langs/en_US/compta.lang
@@ -300,3 +300,4 @@ InvoiceToPay15Days=To pay (15 to 30 days)
 InvoiceToPay30Days=To pay (> 30 days)
 ConfirmPreselectAccount=Preselect accountancy code
 ConfirmPreselectAccountQuestion=Are you sure you want to preselect the %s selected lines with this accountancy code ?
+AmountPaidMustMatchAmountOfDownPayment=Amount paid must match amount of down payment
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