diff --git a/addons/l10n_be/wizard/l10n_be_account_vat_declaration.py b/addons/l10n_be/wizard/l10n_be_account_vat_declaration.py
index ffc5c28753a..aba5ef7692a 100644
--- a/addons/l10n_be/wizard/l10n_be_account_vat_declaration.py
+++ b/addons/l10n_be/wizard/l10n_be_account_vat_declaration.py
@@ -136,16 +136,6 @@ class l10n_be_vat_declaration(osv.osv_memory):
 
         data_of_file = """<?xml version="1.0"?>
 <ns2:VATConsignment xmlns="http://www.minfin.fgov.be/InputCommon" xmlns:ns2="http://www.minfin.fgov.be/VATConsignment" VATDeclarationsNbr="1">
-    <ns2:Representative>
-        <RepresentativeID identificationType="NVAT" issuedBy="%(issued_by)s">%(only_vat)s</RepresentativeID>
-        <Name>%(cmpny_name)s</Name>
-        <Street>%(address)s</Street>
-        <PostCode>%(post_code)s</PostCode>
-        <City>%(city)s</City>
-        <CountryCode>%(country_code)s</CountryCode>
-        <EmailAddress>%(email)s</EmailAddress>
-        <Phone>%(phone)s</Phone>
-    </ns2:Representative>
     <ns2:VATDeclaration SequenceNumber="1" DeclarantReference="%(send_ref)s">
         <ns2:Declarant>
             <VATNumber xmlns="http://www.minfin.fgov.be/InputCommon">%(only_vat)s</VATNumber>
diff --git a/addons/mail/mail_message.py b/addons/mail/mail_message.py
index ac552d1d004..01a50579dd3 100644
--- a/addons/mail/mail_message.py
+++ b/addons/mail/mail_message.py
@@ -802,6 +802,13 @@ class mail_message(osv.Model):
             message_id = tools.generate_tracking_message_id('private')
         return message_id
 
+    @api.multi
+    def _invalidate_documents(self):
+        """ Invalidate the cache of the documents followed by ``self``. """
+        for record in self:
+            if record.res_id:
+                self.env[record.model].invalidate_cache(ids=[record.res_id])
+
     def create(self, cr, uid, values, context=None):
         context = dict(context or {})
         default_starred = context.pop('default_starred', False)
@@ -816,6 +823,7 @@ class mail_message(osv.Model):
             values['record_name'] = self._get_record_name(cr, uid, values, context=context)
 
         newid = super(mail_message, self).create(cr, uid, values, context)
+        self.browse(cr, uid, newid, context)._invalidate_documents()
 
         self._notify(cr, uid, newid, context=context,
                      force_send=context.get('mail_notify_force_send', True),
@@ -837,6 +845,14 @@ class mail_message(osv.Model):
         res = super(mail_message, self).read(cr, uid, ids, fields=fields, context=context, load=load)
         return res
 
+    @api.multi
+    def write(self, vals):
+        if 'model' in vals or 'res_id' in vals:
+            self._invalidate_documents()
+        res = super(mail_message, self).write(vals)
+        self._invalidate_documents()
+        return res
+
     def unlink(self, cr, uid, ids, context=None):
         # cascade-delete attachments that are directly attached to the message (should only happen
         # for mail.messages that act as parent for a standalone mail.mail record).
@@ -848,6 +864,7 @@ class mail_message(osv.Model):
                     attachments_to_delete.append(attach.id)
         if attachments_to_delete:
             self.pool.get('ir.attachment').unlink(cr, uid, attachments_to_delete, context=context)
+        self.browse(cr, uid, ids, context)._invalidate_documents()
         return super(mail_message, self).unlink(cr, uid, ids, context=context)
 
     #------------------------------------------------------
diff --git a/addons/mail/tests/test_mail_message.py b/addons/mail/tests/test_mail_message.py
index aceb90efa8b..5147d1e102c 100644
--- a/addons/mail/tests/test_mail_message.py
+++ b/addons/mail/tests/test_mail_message.py
@@ -444,3 +444,8 @@ class TestMailMessage(TestMail):
             {'subject': 'Subject', 'body': 'Body text'},
             {'default_composition_mode': 'comment', 'default_parent_id': pigs_msg_id})
         mail_compose.send_mail(cr, user_raoul_id, [compose_id])
+
+    def test_60_cache_invalidation(self):
+        msg_cnt = len(self.group_pigs.message_ids)
+        self.group_pigs.message_post(body='Hi!', subject='test')
+        self.assertEqual(len(self.group_pigs.message_ids), msg_cnt + 1)