diff --git a/nova/tests/fake_libvirt_utils.py b/nova/tests/fake_libvirt_utils.py
index aa613f35..51077493 100644
--- a/nova/tests/fake_libvirt_utils.py
+++ b/nova/tests/fake_libvirt_utils.py
@@ -63,10 +63,6 @@ def remove_logical_volumes(*paths):
     pass
 
 
-def ensure_tree(path):
-    pass
-
-
 def write_to_file(path, contents, umask=None):
     pass
 
diff --git a/nova/tests/test_imagebackend.py b/nova/tests/test_imagebackend.py
index 62153ab1..e34f35f7 100644
--- a/nova/tests/test_imagebackend.py
+++ b/nova/tests/test_imagebackend.py
@@ -55,8 +55,8 @@ class _ImageTestCase(test.TestCase):
         os.path.exists(self.TEMPLATE_PATH).AndReturn(False)
         fn = self.mox.CreateMockAnything()
         fn(target=self.TEMPLATE_PATH)
-        self.mox.StubOutWithMock(imagebackend.libvirt_utils, 'ensure_tree')
-        imagebackend.libvirt_utils.ensure_tree(self.TEMPLATE_DIR)
+        self.mox.StubOutWithMock(imagebackend.utils, 'ensure_tree')
+        imagebackend.utils.ensure_tree(self.TEMPLATE_DIR)
         self.mox.ReplayAll()
 
         image = self.image_class(self.INSTANCE, self.NAME)
@@ -82,7 +82,7 @@ class _ImageTestCase(test.TestCase):
         os.path.exists(self.TEMPLATE_PATH).AndReturn(False)
         fn = self.mox.CreateMockAnything()
         fn(target=self.TEMPLATE_PATH)
-        self.mox.StubOutWithMock(imagebackend.libvirt_utils, 'ensure_tree')
+        self.mox.StubOutWithMock(imagebackend.utils, 'ensure_tree')
         self.mox.ReplayAll()
 
         image = self.image_class(self.INSTANCE, self.NAME)
diff --git a/nova/tests/test_libvirt.py b/nova/tests/test_libvirt.py
index cd7688c8..13ea48af 100644
--- a/nova/tests/test_libvirt.py
+++ b/nova/tests/test_libvirt.py
@@ -3394,12 +3394,6 @@ disk size: 4.4M''', ''))
         libvirt_utils.mkfs('ext4', '/my/block/dev')
         libvirt_utils.mkfs('swap', '/my/swap/block/dev')
 
-    def test_ensure_tree(self):
-        with utils.tempdir() as tmpdir:
-            testdir = '%s/foo/bar/baz' % (tmpdir,)
-            libvirt_utils.ensure_tree(testdir)
-            self.assertTrue(os.path.isdir(testdir))
-
     def test_write_to_file(self):
         dst_fd, dst_path = tempfile.mkstemp()
         try: