--- contrib/fix-session_attribute-failed_logins.py
+++ contrib/fix-session_attribute-failed_logins.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python2
 # -*- coding: utf-8 -*-
 #
 # Copyright (C) 2012 Steffen Hoffmann <hoff.st@web.de>
--- contrib/sessionstore_convert.py
+++ contrib/sessionstore_convert.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python2
 #
 # Copyright (C) 2007 Matthew Good <trac@matt-good.net>
 # All rights reserved.
--- setup.py
+++ setup.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python2
 
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution.