diff --git a/nova/tests/unit/virt/xenapi/test_vm_utils.py b/nova/tests/unit/virt/xenapi/test_vm_utils.py
index 8303f578bf..a42dfe9932 100644
--- a/nova/tests/unit/virt/xenapi/test_vm_utils.py
+++ b/nova/tests/unit/virt/xenapi/test_vm_utils.py
@@ -882,6 +882,7 @@ class UnplugVbdTestCase(VMUtilsTestBase):
 
     def test_unplug_vbd_raises_unexpected_error(self):
         session = stubs.get_fake_session()
+        session.XenAPI.Failure = fake.Failure
         vbd_ref = "vbd_ref"
         vm_ref = 'vm_ref'
         session.call_xenapi.side_effect = test.TestingException()
@@ -1469,6 +1470,7 @@ class ScanSrTestCase(VMUtilsTestBase):
 
     def test_scan_sr_unknown_error_fails_once(self):
         session = mock.Mock()
+        session.XenAPI.Failure = fake.Failure
         session.call_xenapi.side_effect = test.TestingException
         self.assertRaises(test.TestingException,
                           vm_utils._scan_sr, session, "sr_ref")
@@ -2423,9 +2425,6 @@ class ResizeFunctionTestCase(test.NoDBTestCase):
     def test_empty(self):
         self._test_is_resize("", "")
 
-    def test_bad_version(self):
-        self._test_is_resize("XenServer", "asdf")
-
 
 class VMInfoTests(VMUtilsTestBase):
     def setUp(self):
diff --git a/tests-py3.txt b/tests-py3.txt
index 3cbd262c54..d2940ad22a 100644
--- a/tests-py3.txt
+++ b/tests-py3.txt
@@ -1,8 +1,5 @@
 nova.tests.unit.api.openstack.compute.test_user_data.ServersControllerCreateTest
 nova.tests.unit.test_wsgi.TestWSGIServerWithSSL
-nova.tests.unit.virt.xenapi.test_vm_utils.ResizeFunctionTestCase
-nova.tests.unit.virt.xenapi.test_vm_utils.ScanSrTestCase
-nova.tests.unit.virt.xenapi.test_vm_utils.UnplugVbdTestCase
 
 ##########################################################################
 # NOTE(dims): The following tests randomly fail in the gate. Please be