diff --git a/htdocs/langs/en_US/other.lang b/htdocs/langs/en_US/other.lang
index 1e8c9bcfe8b..6a8fdd730c9 100644
--- a/htdocs/langs/en_US/other.lang
+++ b/htdocs/langs/en_US/other.lang
@@ -45,6 +45,9 @@ Notify_MEMBER_SUBSCRIPTION=Member subscribed
 Notify_MEMBER_RESILIATE=Member resiliated
 Notify_MEMBER_DELETE=Member deleted
 Notify_PROJECT_CREATE=Project creation
+Notify_TASK_CREATE=Task created
+Notify_TASK_MODIFY=Task modified
+Notify_TASK_DELETE=Task deleted
 NbOfAttachedFiles=Number of attached files/documents
 TotalSizeOfAttachedFiles=Total size of attached files/documents
 MaxSize=Maximum size