diff --git a/addons/mail/static/src/js/models/threads/mailbox.js b/addons/mail/static/src/js/models/threads/mailbox.js
index 172b5af9e3b..9523ad46517 100644
--- a/addons/mail/static/src/js/models/threads/mailbox.js
+++ b/addons/mail/static/src/js/models/threads/mailbox.js
@@ -204,7 +204,7 @@ var Mailbox = SearchableThread.extend({
         } else if (this._id === 'mailbox_moderation') {
             return [['need_moderation', '=', true]];
         } else {
-            throw _t(_.str("Missing domain for mailbox with ID '%s'", this._id));
+            throw (_.str(_t("Missing domain for mailbox with ID '%s'"), this._id));
         }
     },
 });