diff --git a/nova/tests/unit/compute/test_compute_api.py b/nova/tests/unit/compute/test_compute_api.py
index 8a97da89bff8..4cf5f0cf1186 100644
--- a/nova/tests/unit/compute/test_compute_api.py
+++ b/nova/tests/unit/compute/test_compute_api.py
@@ -3036,41 +3036,36 @@ class _ComputeAPIUnitTestMixIn(object):
             self.assertEqual('Server-%s' % instance.uuid, instance.hostname)
 
     def test_host_statuses(self):
-        # NOTE(tojuvone) Some test cases break utcnow() by calling
-        # timeutils.set_time_override() with some own time. Have to issue a
-        # bug to fix those cases to reset time back like line below so next
-        # test cases will work.
-        timeutils.clear_time_override()
         instances = [
-            objects.Instance(uuid='uuid1', host='host1', services=
+            objects.Instance(uuid=uuids.instance_1, host='host1', services=
                              self._obj_to_list_obj(objects.ServiceList(
                              self.context), objects.Service(id=0, host='host1',
                              disabled=True, forced_down=True,
                              binary='nova-compute'))),
-            objects.Instance(uuid='uuid2', host='host2', services=
+            objects.Instance(uuid=uuids.instance_2, host='host2', services=
                              self._obj_to_list_obj(objects.ServiceList(
                              self.context), objects.Service(id=0, host='host2',
                              disabled=True, forced_down=False,
                              binary='nova-compute'))),
-            objects.Instance(uuid='uuid3', host='host3', services=
+            objects.Instance(uuid=uuids.instance_3, host='host3', services=
                              self._obj_to_list_obj(objects.ServiceList(
                              self.context), objects.Service(id=0, host='host3',
                              disabled=False, last_seen_up=timeutils.utcnow()
                              - datetime.timedelta(minutes=5),
                              forced_down=False, binary='nova-compute'))),
-            objects.Instance(uuid='uuid4', host='host4', services=
+            objects.Instance(uuid=uuids.instance_4, host='host4', services=
                              self._obj_to_list_obj(objects.ServiceList(
                              self.context), objects.Service(id=0, host='host4',
                              disabled=False, last_seen_up=timeutils.utcnow(),
                              forced_down=False, binary='nova-compute'))),
-            objects.Instance(uuid='uuid5', host='host5', services=
+            objects.Instance(uuid=uuids.instance_5, host='host5', services=
                              objects.ServiceList()),
-            objects.Instance(uuid='uuid6', host=None, services=
+            objects.Instance(uuid=uuids.instance_6, host=None, services=
                              self._obj_to_list_obj(objects.ServiceList(
                              self.context), objects.Service(id=0, host='host6',
                              disabled=True, forced_down=False,
                              binary='nova-compute'))),
-            objects.Instance(uuid='uuid7', host='host2', services=
+            objects.Instance(uuid=uuids.instance_7, host='host2', services=
                              self._obj_to_list_obj(objects.ServiceList(
                              self.context), objects.Service(id=0, host='host2',
                              disabled=True, forced_down=False,
@@ -3079,13 +3074,13 @@ class _ComputeAPIUnitTestMixIn(object):
 
         host_statuses = self.compute_api.get_instances_host_statuses(
                         instances)
-        expect_statuses = {'uuid1': fields_obj.HostStatus.DOWN,
-                           'uuid2': fields_obj.HostStatus.MAINTENANCE,
-                           'uuid3': fields_obj.HostStatus.UNKNOWN,
-                           'uuid4': fields_obj.HostStatus.UP,
-                           'uuid5': fields_obj.HostStatus.NONE,
-                           'uuid6': fields_obj.HostStatus.NONE,
-                           'uuid7': fields_obj.HostStatus.MAINTENANCE}
+        expect_statuses = {uuids.instance_1: fields_obj.HostStatus.DOWN,
+                           uuids.instance_2: fields_obj.HostStatus.MAINTENANCE,
+                           uuids.instance_3: fields_obj.HostStatus.UNKNOWN,
+                           uuids.instance_4: fields_obj.HostStatus.UP,
+                           uuids.instance_5: fields_obj.HostStatus.NONE,
+                           uuids.instance_6: fields_obj.HostStatus.NONE,
+                           uuids.instance_7: fields_obj.HostStatus.MAINTENANCE}
         for instance in instances:
             self.assertEqual(expect_statuses[instance.uuid],
                              host_statuses[instance.uuid])