diff --git a/addons/mail/models/mail_notification.py b/addons/mail/models/mail_notification.py
index 3a67e565a7a..44f03184f0d 100644
--- a/addons/mail/models/mail_notification.py
+++ b/addons/mail/models/mail_notification.py
@@ -100,5 +100,5 @@ class MailNotification(models.Model):
             'notification_type': notif.notification_type,
             'notification_status': notif.notification_status,
             'failure_type': notif.failure_type,
-            'res_partner_id': [notif.res_partner_id.id, notif.res_partner_id.display_name],
+            'res_partner_id': [notif.res_partner_id.id, notif.res_partner_id.display_name] if notif.res_partner_id else False,
         } for notif in self]