Fix python interpreter.
diff --git a/build_release.py b/build_release.py
index 121fa5a..74cb71e 100755
--- a/build_release.py
+++ b/build_release.py
@@ -1,4 +1,5 @@
-#!/usr/bin/env python
+#!/usr/bin/python
+
 # Copyright (C) 2012 Linaro
 #
 # Author: Andy Doan <andy.doan@linaro.org>