diff --git a/addons/mass_mailing/models/mass_mailing.py b/addons/mass_mailing/models/mass_mailing.py
index 7aa8ddeec56..db828aa1b75 100644
--- a/addons/mass_mailing/models/mass_mailing.py
+++ b/addons/mass_mailing/models/mass_mailing.py
@@ -517,7 +517,7 @@ class MassMailing(models.Model):
     def retry_failed_mail(self):
         failed_mails = self.env['mail.mail'].search([('mailing_id', 'in', self.ids), ('state', '=', 'exception')])
         failed_mails.mapped('statistics_ids').unlink()
-        failed_mails.unlink()
+        failed_mails.sudo().unlink()
         self.write({'state': 'in_queue'})
 
     #------------------------------------------------------