diff --git a/addons/mail/models/mail_tracking_value.py b/addons/mail/models/mail_tracking_value.py
index 1651d4b6002..a35d10c9c0c 100644
--- a/addons/mail/models/mail_tracking_value.py
+++ b/addons/mail/models/mail_tracking_value.py
@@ -40,7 +40,7 @@ class MailTracking(models.Model):
         for tracking in self:
             model = self.env[tracking.mail_message_id.model]
             field = model._fields.get(tracking.field)
-            tracking.field_groups = field.groups
+            tracking.field_groups = field.groups if field else 'base.group_system'
 
     @api.model
     def create_tracking_values(self, initial_value, new_value, col_name, col_info, tracking_sequence):