diff --git a/addons/website_forum/models/forum.py b/addons/website_forum/models/forum.py
index ba7dc132988..c271b0cdef7 100644
--- a/addons/website_forum/models/forum.py
+++ b/addons/website_forum/models/forum.py
@@ -492,7 +492,7 @@ class Post(models.Model):
             elif post.state == 'pending' and not post.parent_id:
                 # TDE FIXME: in master, you should probably use a subtype;
                 # however here we remove subtype but set partner_ids
-                partners = post.message_partner_ids.filtered(lambda partner: partner.user_ids and partner.user_ids.karma >= post.forum_id.karma_moderate)
+                partners = post.sudo().message_partner_ids.filtered(lambda partner: partner.user_ids and partner.user_ids.karma >= post.forum_id.karma_moderate)
                 note_subtype = self.sudo().env.ref('mail.mt_note')
                 body = _(
                     '<p>A new question <i>%s</i> has been asked on %s and require your validation. <a href="%s/forum/%s/question/%s">Click here to access the question.</a></p>' %