diff --git a/nova/api/openstack/compute/contrib/services.py b/nova/api/openstack/compute/contrib/services.py
index 76eec7ce4c20..05e7fe45ac5f 100644
--- a/nova/api/openstack/compute/contrib/services.py
+++ b/nova/api/openstack/compute/contrib/services.py
@@ -166,7 +166,10 @@ class ServiceController(object):
                     'status': status,
                 },
             }
-            status_detail = {'disabled': disabled}
+            status_detail = {
+                'disabled': disabled,
+                'disabled_reason': None,
+            }
             if id == "disable-log-reason":
                 reason = body['disabled_reason']
                 if not self._is_valid_as_reason(reason):
diff --git a/nova/tests/api/openstack/compute/contrib/test_services.py b/nova/tests/api/openstack/compute/contrib/test_services.py
index c9d0c76e5d03..c53461534e94 100644
--- a/nova/tests/api/openstack/compute/contrib/test_services.py
+++ b/nova/tests/api/openstack/compute/contrib/test_services.py
@@ -320,10 +320,15 @@ class ServicesTest(test.TestCase):
         self.assertEqual(res_dict, response)
 
     def test_services_enable(self):
+        def _service_update(context, service_id, values):
+            self.assertEqual(values['disabled_reason'], None)
+
+        self.stubs.Set(db, "service_update", _service_update)
+
         body = {'host': 'host1', 'binary': 'nova-compute'}
         req = fakes.HTTPRequest.blank('/v2/fake/os-services/enable')
-        res_dict = self.controller.update(req, "enable", body)
 
+        res_dict = self.controller.update(req, "enable", body)
         self.assertEqual(res_dict['service']['status'], 'enabled')
         self.assertFalse('disabled_reason' in res_dict['service'])