diff --git a/addons/mail/models/mail_tracking_value.py b/addons/mail/models/mail_tracking_value.py
index ce1dcfc9d72..60c9f4799c1 100644
--- a/addons/mail/models/mail_tracking_value.py
+++ b/addons/mail/models/mail_tracking_value.py
@@ -38,8 +38,10 @@ class MailTracking(models.Model):
     @api.depends('mail_message_id', 'field_id')
     def _compute_field_groups(self):
         for tracking in self:
-            model = self.env[tracking.field_id.model]
-            field = model._fields.get(tracking.field_id.name)
+            field = None
+            if tracking.field_id:
+                model = self.env[tracking.field_id.model]
+                field = model._fields.get(tracking.field_id.name)
             tracking.field_groups = field.groups if field else 'base.group_system'
 
     @api.model
diff --git a/addons/test_mail/tests/test_message_track.py b/addons/test_mail/tests/test_message_track.py
index ba4a96aba29..f766f96ee5c 100644
--- a/addons/test_mail/tests/test_message_track.py
+++ b/addons/test_mail/tests/test_message_track.py
@@ -793,6 +793,10 @@ class TestTrackingInternals(MailCommon):
         trackings = main_track.message_ids.sudo().tracking_value_ids
         self.assertEqual(len(trackings), 3)
 
+        # check groups, as it depends on model
+        for tracking, exp_groups in zip(trackings, ['base.group_user', 'base.group_system', 'base.group_system']):
+            self.assertEqual(tracking.field_groups, exp_groups)
+
         # check formatting, as it fetches info on model
         formatted = trackings._tracking_value_format()
         self.assertEqual(