diff --git a/dev/translation/ignore_translation_keys.lst b/dev/translation/ignore_translation_keys.lst
index 0afd3d9d139..ae2bf3581d6 100644
--- a/dev/translation/ignore_translation_keys.lst
+++ b/dev/translation/ignore_translation_keys.lst
@@ -174,7 +174,6 @@ CalcModeLT
 CalculatedFromProductsToConsume
 CancelReception
 Candidatures
-CantBeNullOrPositive
 CantConvertToReducAnInvoiceOfThisType
 CardFichinter
 CardProduct
diff --git a/htdocs/langs/en_US/bills.lang b/htdocs/langs/en_US/bills.lang
index e6f04f74572..01f77814edf 100644
--- a/htdocs/langs/en_US/bills.lang
+++ b/htdocs/langs/en_US/bills.lang
@@ -612,6 +612,7 @@ DisabledBecauseNotLastInCycle=The next situation already exists.
 DisabledBecauseFinal=This situation is final.
 situationInvoiceShortcode_AS=AS
 situationInvoiceShortcode_S=S
+CantBeNullOrPositive=The progress of a credit note invoice can't be null or positive
 CantBeLessThanMinPercent=The progress can't be smaller than its value in the previous situation.
 NoSituations=No open situations
 InvoiceSituationLast=Final and general invoice