diff --git a/mass_mailing_partner/__manifest__.py b/mass_mailing_partner/__manifest__.py
index c70313c..f528523 100644
--- a/mass_mailing_partner/__manifest__.py
+++ b/mass_mailing_partner/__manifest__.py
@@ -5,7 +5,7 @@
 
 {
     "name": "Link partners with mass-mailing",
-    "version": "12.0.1.0.0",
+    "version": "12.0.1.0.1",
     "author": "Tecnativa, "
               "Odoo Community Association (OCA)",
     "website": "https://github.com/OCA/social",
diff --git a/mass_mailing_partner/models/res_partner.py b/mass_mailing_partner/models/res_partner.py
index e371b99..7e25558 100644
--- a/mass_mailing_partner/models/res_partner.py
+++ b/mass_mailing_partner/models/res_partner.py
@@ -32,7 +32,7 @@ class ResPartner(models.Model):
     @api.constrains('email')
     def _check_email_mass_mailing_contacts(self):
         for partner in self:
-            if not partner.email and self.sudo().mass_mailing_contact_ids:
+            if not partner.email and partner.sudo().mass_mailing_contact_ids:
                 raise ValidationError(_(
                     "This partner '%s' is linked to one or more mass "
                     "mailing contact. Email must be assigned."