diff --git a/addons/im_livechat/controllers/main.py b/addons/im_livechat/controllers/main.py
index eaf54eaf399..25e5a946fbc 100644
--- a/addons/im_livechat/controllers/main.py
+++ b/addons/im_livechat/controllers/main.py
@@ -70,9 +70,10 @@ class LivechatController(http.Controller):
             anonymous_name = request.env.user.name
         return request.env["im_livechat.channel"].get_mail_channel(channel_id, anonymous_name)
 
+    # Do not forward port in 10.0
     @http.route('/im_livechat/history', type="json", auth="public")
     def history(self, channel_id, limit):
-        return request.env["mail.channel"].browse(channel_id).channel_fetch_message(limit=limit)
+        return request.env["mail.channel"].browse(channel_id).sudo().channel_fetch_message(limit=limit)
 
     @http.route('/im_livechat/feedback', type='json', auth='public')
     def feedback(self, uuid, rate, reason=None, **kwargs):
diff --git a/addons/mail/controllers/bus.py b/addons/mail/controllers/bus.py
index 96d092f97b4..274cb722655 100644
--- a/addons/mail/controllers/bus.py
+++ b/addons/mail/controllers/bus.py
@@ -36,14 +36,13 @@ class MailChatController(openerp.addons.bus.controllers.main.BusController):
     # --------------------------
     @openerp.http.route('/mail/chat_post', type="json", auth="none")
     def mail_chat_post(self, uuid, message_content, **kwargs):
-        request_uid = self._default_request_uid()
         # find the author from the user session, which can be None
         author_id = False  # message_post accept 'False' author_id, but not 'None'
         if request.session.uid:
             author_id = request.env['res.users'].sudo().browse(request.session.uid).partner_id.id
         # post a message without adding followers to the channel. email_from=False avoid to get author from email data
-        mail_channel = request.env["mail.channel"].sudo(request_uid).search([('uuid', '=', uuid)], limit=1)
-        message = mail_channel.sudo(request_uid).with_context(mail_create_nosubscribe=True).message_post(author_id=author_id, email_from=False, body=message_content, message_type='comment', subtype='mail.mt_comment', content_subtype='plaintext', **kwargs)
+        mail_channel = request.env["mail.channel"].sudo().search([('uuid', '=', uuid)], limit=1)
+        message = mail_channel.sudo().with_context(mail_create_nosubscribe=True).message_post(author_id=author_id, email_from=False, body=message_content, message_type='comment', subtype='mail.mt_comment', content_subtype='plaintext')
         return message and message.id or False
 
     @openerp.http.route(['/mail/chat_history'], type="json", auth="none")