diff --git a/extensions/lang-english/locale/core.yml b/extensions/lang-english/locale/core.yml
index 809e4ae15..53f9e8eb5 100644
--- a/extensions/lang-english/locale/core.yml
+++ b/extensions/lang-english/locale/core.yml
@@ -195,6 +195,7 @@ core:
     discussion_list:
       empty_text: "It looks like there are no discussions here."
       load_more_button: => core.ref.load_more
+      mark_all_as_read_confirmation: "Are you sure you want to mark all notifications as read?"
       mark_as_read_tooltip: Mark as Read
       replied_text: "{username} replied {ago}"
       started_text: "{username} started {ago}"