diff --git a/addons/base_action_rule/test_models.py b/addons/base_action_rule/test_models.py
index 2a88def6f75..b931b0fc3be 100644
--- a/addons/base_action_rule/test_models.py
+++ b/addons/base_action_rule/test_models.py
@@ -1,4 +1,5 @@
 from openerp.osv import fields, osv
+from openerp import api
 
 AVAILABLE_STATES = [
     ('draft', 'New'),
@@ -25,6 +26,7 @@ class lead_test(osv.Model):
         'active' : True,
     }
 
+    @api.cr_uid_ids_context
     def message_post(self, cr, uid, thread_id, body='', subject=None, type='notification', subtype=None, parent_id=False, attachments=None, context=None, **kwargs):
         pass
 
diff --git a/addons/calendar/calendar.py b/addons/calendar/calendar.py
index 35881da48bc..1115343fedc 100644
--- a/addons/calendar/calendar.py
+++ b/addons/calendar/calendar.py
@@ -11,6 +11,7 @@ from datetime import datetime, timedelta
 from dateutil import parser
 from dateutil import rrule
 from dateutil.relativedelta import relativedelta
+from openerp import api
 from openerp import tools, SUPERUSER_ID
 from openerp.osv import fields, osv
 from openerp.tools import DEFAULT_SERVER_DATE_FORMAT, DEFAULT_SERVER_DATETIME_FORMAT
@@ -1323,6 +1324,7 @@ class calendar_event(osv.Model):
             ('user_id', '=', uid),
         ]
 
+    @api.cr_uid_ids_context
     def message_post(self, cr, uid, thread_id, body='', subject=None, type='notification', subtype=None, parent_id=False, attachments=None, context=None, **kwargs):
         if isinstance(thread_id, str):
             thread_id = get_real_ids(thread_id)
diff --git a/addons/hr/res_users.py b/addons/hr/res_users.py
index 78c0b841255..e6f2ca36fe5 100644
--- a/addons/hr/res_users.py
+++ b/addons/hr/res_users.py
@@ -1,5 +1,5 @@
+from openerp import api
 from openerp.osv import fields, osv
-from openerp.tools.translate import _
 
 
 class res_users(osv.Model):
@@ -52,6 +52,7 @@ class res_users(osv.Model):
             thread_id = thread_id[0]
         return self.pool.get('hr.employee').search(cr, uid, [('user_id', '=', thread_id)], context=context)
 
+    @api.cr_uid_ids_context
     def message_post(self, cr, uid, thread_id, context=None, **kwargs):
         """ Redirect the posting of message on res.users to the related employee.
             This is done because when giving the context of Chatter on the
diff --git a/addons/mail/res_users.py b/addons/mail/res_users.py
index a4b4e68942b..097893ae601 100644
--- a/addons/mail/res_users.py
+++ b/addons/mail/res_users.py
@@ -20,6 +20,7 @@
 ##############################################################################
 
 from openerp.osv import fields, osv
+from openerp import api
 from openerp import SUPERUSER_ID
 from openerp.tools.translate import _
 import openerp
@@ -115,6 +116,7 @@ class res_users(osv.Model):
             thread_id = thread_id[0]
         return self.browse(cr, SUPERUSER_ID, thread_id).partner_id.id
 
+    @api.cr_uid_ids_context
     def message_post(self, cr, uid, thread_id, context=None, **kwargs):
         """ Redirect the posting of message on res.users to the related partner.
             This is done because when giving the context of Chatter on the
diff --git a/addons/project_issue/project_issue.py b/addons/project_issue/project_issue.py
index 0c3ba5683fd..016313b5e44 100644
--- a/addons/project_issue/project_issue.py
+++ b/addons/project_issue/project_issue.py
@@ -21,6 +21,7 @@
 
 from datetime import datetime
 
+from openerp import api
 from openerp import SUPERUSER_ID
 from openerp import tools
 from openerp.osv import fields, osv, orm
@@ -449,6 +450,7 @@ class project_issue(osv.Model):
         res_id = super(project_issue, self).message_new(cr, uid, msg, custom_values=defaults, context=context)
         return res_id
 
+    @api.cr_uid_ids_context
     def message_post(self, cr, uid, thread_id, body='', subject=None, type='notification', subtype=None, parent_id=False, attachments=None, context=None, content_subtype='html', **kwargs):
         """ Overrides mail_thread message_post so that we can set the date of last action field when
             a new message is posted on the issue.