diff --git a/htdocs/langs/en_US/mails.lang b/htdocs/langs/en_US/mails.lang
index 8544df3c295..5accb85aefe 100644
--- a/htdocs/langs/en_US/mails.lang
+++ b/htdocs/langs/en_US/mails.lang
@@ -72,4 +72,5 @@ TargetsReset=Clear list
 ToClearAllRecipientsClickHere=To clear recipients' list for this emailing, click here
 ToAddRecipientsChooseHere=To add recipients, choose in those lists
 NbOfEMailingsReceived=Mass emailings received
-IdRecord=ID record
\ No newline at end of file
+IdRecord=ID record
+DeliveryReceipt=Delivery Receipt
\ No newline at end of file
diff --git a/htdocs/langs/fr_FR/mails.lang b/htdocs/langs/fr_FR/mails.lang
index 63673e5021f..52acdc51ce0 100644
--- a/htdocs/langs/fr_FR/mails.lang
+++ b/htdocs/langs/fr_FR/mails.lang
@@ -72,4 +72,5 @@ TargetsReset=Vider liste
 ToClearAllRecipientsClickHere=Pour effacer la liste des destinataires de ce mailing, cliquer ici
 ToAddRecipientsChooseHere=Pour ajouter des destinataires, choisir dans les listes ci-dessous
 NbOfEMailingsReceived=Mailings de masse reçus
-IdRecord=ID enregistrement
\ No newline at end of file
+IdRecord=ID enregistrement
+DeliveryReceipt=Accusé de réception
\ No newline at end of file