diff --git a/site_utils/lxc/lxc_functional_test.py b/site_utils/lxc/lxc_functional_test.py
index a958765..4bf41c2 100755
--- a/site_utils/lxc/lxc_functional_test.py
+++ b/site_utils/lxc/lxc_functional_test.py
@@ -1,3 +1,4 @@
+#!/usr/bin/python
 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.