diff --git a/neutron/api/v2/base.py b/neutron/api/v2/base.py
index 0749d148b1..5e6b6a5115 100644
--- a/neutron/api/v2/base.py
+++ b/neutron/api/v2/base.py
@@ -460,8 +460,8 @@ class Controller(object):
         # but pass only attributes in the original body and required
         # by the policy engine to the policy 'brain'
         field_list = [name for (name, value) in self._attr_info.iteritems()
-                      if ('required_by_policy' in value and
-                          value['required_by_policy'] or
+                      if (value.get('required_by_policy') or
+                          value.get('primary_key') or
                           'default' not in value)]
         orig_obj = self._item(request, id, field_list=field_list,
                               parent_id=parent_id)
diff --git a/neutron/tests/unit/test_api_v2.py b/neutron/tests/unit/test_api_v2.py
index 4e2cc76f26..200aa2966b 100644
--- a/neutron/tests/unit/test_api_v2.py
+++ b/neutron/tests/unit/test_api_v2.py
@@ -1085,6 +1085,10 @@ class JSONV2TestCase(APIv2TestBase, testlib_api.WebTestCase):
                            self.serialize(data),
                            extra_environ=env,
                            expect_errors=expect_errors)
+        #  Ensure id attribute is included in fields returned by GET call
+        #  in update procedure.
+        self.assertEqual(1, instance.get_network.call_count)
+        self.assertIn('id', instance.get_network.call_args[1]['fields'])
         self.assertEqual(res.status_int, expected_code)
 
     def test_update_noauth(self):