diff --git a/mail_tracking_mailgun/__openerp__.py b/mail_tracking_mailgun/__openerp__.py
index 12f3e5d3..4e5df5aa 100644
--- a/mail_tracking_mailgun/__openerp__.py
+++ b/mail_tracking_mailgun/__openerp__.py
@@ -7,7 +7,7 @@
 {
     "name": "Mail tracking for Mailgun",
     "summary": "Mail tracking and Mailgun webhooks integration",
-    "version": "9.0.1.2.0",
+    "version": "9.0.1.2.1",
     "category": "Social Network",
     "website": "https://odoo-community.org/",
     "author": "Tecnativa, "
diff --git a/mail_tracking_mailgun/models/res_partner.py b/mail_tracking_mailgun/models/res_partner.py
index 1d138e9a..e08c74dc 100644
--- a/mail_tracking_mailgun/models/res_partner.py
+++ b/mail_tracking_mailgun/models/res_partner.py
@@ -30,8 +30,7 @@ class ResPartner(models.Model):
             body = _('Email has been bounced: %s\n'
                      'Reason: %s\n'
                      'Event: %s') % (partner.email, reason,
-                                     event and event.get('Message-Id',
-                                                         _('unknown')))
+                                     event and event.id or _('unknown'))
             partner.message_post(body=body)
 
     @api.multi
diff --git a/mail_tracking_mailgun/tests/test_mailgun.py b/mail_tracking_mailgun/tests/test_mailgun.py
index 4201c9fe..a7aac7db 100644
--- a/mail_tracking_mailgun/tests/test_mailgun.py
+++ b/mail_tracking_mailgun/tests/test_mailgun.py
@@ -381,10 +381,10 @@ class TestMailgun(TransactionCase):
 
     def test_email_bounced_set(self):
         message_number = len(self.partner.message_ids) + 1
-        self.partner._email_bounced_set('test_error', self.event)
+        self.partner._email_bounced_set('test_error', False)
         self.assertEqual(len(self.partner.message_ids), message_number)
         self.partner.email = ""
-        self.partner._email_bounced_set('test_error', self.event)
+        self.partner._email_bounced_set('test_error', False)
         self.assertEqual(len(self.partner.message_ids), message_number)
 
     @mock.patch(_packagepath + '.models.mail_tracking_email.requests')