diff --git a/htdocs/langs/en_US/ticket.lang b/htdocs/langs/en_US/ticket.lang
index 38b199f7260..710ae491973 100644
--- a/htdocs/langs/en_US/ticket.lang
+++ b/htdocs/langs/en_US/ticket.lang
@@ -244,6 +244,8 @@ TicketNotNotifyTiersAtCreate=Not notify company at create
 Unread=Unread
 TicketNotCreatedFromPublicInterface=Not available. Ticket was not created from public interface.
 ErrorTicketRefRequired=Ticket reference name is required
+TicketsDelayForFirstResponseTooLong=Too much time elapsed since ticket opening without any answer.
+TicketsDelayFromLastResponseTooLong=Too much time elapsed since last answer on this ticket.
 
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 # Logs