diff --git a/addons/mail/models/discuss/discuss_channel.py b/addons/mail/models/discuss/discuss_channel.py
index 6f783cf548b..d81838fb39c 100644
--- a/addons/mail/models/discuss/discuss_channel.py
+++ b/addons/mail/models/discuss/discuss_channel.py
@@ -1153,7 +1153,7 @@ class Channel(models.Model):
         new_channel = self.create(vals)
         group = self.env['res.groups'].search([('id', '=', group_id)]) if group_id else None
         new_channel.group_public_id = group.id if group else None
-        notification = Markup('<div class="o_mail_notification">created this channel.</div>')
+        notification = Markup('<div class="o_mail_notification">%s</div>') % _("created this channel.")
         new_channel.message_post(body=notification, message_type="notification", subtype_xmlid="mail.mt_comment")
         channel_info = new_channel._channel_info()[0]
         self.env['bus.bus']._sendone(self.env.user.partner_id, 'mail.record/insert', {"Thread": channel_info})