diff --git a/nova/tests/functional/api_sample_tests/test_fixed_ips.py b/nova/tests/functional/api_sample_tests/test_fixed_ips.py
index c02213215354..32d46b4de32e 100644
--- a/nova/tests/functional/api_sample_tests/test_fixed_ips.py
+++ b/nova/tests/functional/api_sample_tests/test_fixed_ips.py
@@ -17,6 +17,7 @@ from nova import exception
 from nova.tests.functional.api_sample_tests import test_servers
 from nova.tests.unit.objects import test_network
 from nova.tests.unit import utils as test_utils
+from nova.tests import uuidsentinel as uuids
 
 CONF = nova.conf.CONF
 
@@ -42,7 +43,7 @@ class FixedIpTest(test_servers.ServersSampleBase):
                    'address': '192.168.1.1',
                    'network_id': 1,
                    'virtual_interface_id': 1,
-                   'instance_uuid': '1',
+                   'instance_uuid': uuids.instance_1,
                    'allocated': False,
                    'leased': False,
                    'reserved': False,
@@ -57,7 +58,7 @@ class FixedIpTest(test_servers.ServersSampleBase):
                    'address': '192.168.1.2',
                    'network_id': 1,
                    'virtual_interface_id': 2,
-                   'instance_uuid': '2',
+                   'instance_uuid': uuids.instance_2,
                    'allocated': False,
                    'leased': False,
                    'reserved': False,