diff --git a/htdocs/langs/en_US/bills.lang b/htdocs/langs/en_US/bills.lang
index 692da18af32..21c2173c558 100644
--- a/htdocs/langs/en_US/bills.lang
+++ b/htdocs/langs/en_US/bills.lang
@@ -266,6 +266,7 @@ InvoicePaid=Invoice paid
 PaymentNumber=Payment number
 RemoveDiscount=Remove discount
 WatermarkOnDraftBill=Watermark on draft invoices (nothing if empty)
+InvoiceNotChecked=No invoice selected
 CloneInvoice=Clone invoice
 ConfirmCloneInvoice=Are you sure you want to clone this invoice <b>%s</b> ?
 DisabledBecauseReplacedInvoice=Action disabled because invoice has been replaced