diff --git a/tools/pylibopenflow/bin/pyopenflow-pythonize.py b/tools/pylibopenflow/bin/pyopenflow-pythonize.py
old mode 100755
new mode 100644
index 97b7c8f..6da4af9
--- a/tools/pylibopenflow/bin/pyopenflow-pythonize.py
+++ b/tools/pylibopenflow/bin/pyopenflow-pythonize.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.5
+#!/usr/bin/env python
 """This script generate openflow-packets.py which
 creates Python class for each data structure in openflow.h.