diff --git a/event_rpcgen.py b/event_rpcgen.py
index e051aa9d..dead34c2 100755
--- a/event_rpcgen.py
+++ b/event_rpcgen.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 #
 # Copyright (c) 2005-2007 Niels Provos <provos@citi.umich.edu>
 # Copyright (c) 2007-2012 Niels Provos and Nick Mathewson