diff --git a/nova/tests/fake_libvirt_utils.py b/nova/tests/fake_libvirt_utils.py
index b3d842468..285a4b7e3 100644
--- a/nova/tests/fake_libvirt_utils.py
+++ b/nova/tests/fake_libvirt_utils.py
@@ -144,3 +144,7 @@ def fetch_image(context, target, image_id, user_id, project_id):
 def get_instance_path(instance):
     # TODO(mikal): we should really just call the real one here
     return os.path.join(CONF.instances_path, instance['name'])
+
+
+def pick_disk_driver_name(is_block_dev=False):
+    return "qemu"
diff --git a/nova/tests/test_libvirt.py b/nova/tests/test_libvirt.py
index 12b1c1a69..c93bb0168 100644
--- a/nova/tests/test_libvirt.py
+++ b/nova/tests/test_libvirt.py
@@ -273,7 +273,7 @@ class LibvirtConnTestCase(test.TestCase):
             'nova.virt.libvirt.driver.libvirt_utils',
             fake_libvirt_utils))
         self.useFixture(fixtures.MonkeyPatch(
-            'nova.virt.libvirt.snapshots.libvirt_utils',
+            'nova.virt.libvirt.imagebackend.libvirt_utils',
             fake_libvirt_utils))
 
         def fake_extend(image, size):
diff --git a/nova/tests/test_virt_drivers.py b/nova/tests/test_virt_drivers.py
index 67452bc24..a94fdc3c5 100644
--- a/nova/tests/test_virt_drivers.py
+++ b/nova/tests/test_virt_drivers.py
@@ -84,7 +84,7 @@ class _FakeDriverBackendTestCase(object):
             'nova.virt.libvirt.driver.libvirt_utils',
             fake_libvirt_utils))
         self.useFixture(fixtures.MonkeyPatch(
-            'nova.virt.libvirt.snapshots.libvirt_utils',
+            'nova.virt.libvirt.imagebackend.libvirt_utils',
             fake_libvirt_utils))
         self.useFixture(fixtures.MonkeyPatch(
             'nova.virt.libvirt.firewall.libvirt',