diff --git a/ryu/tests/test_lib.py b/ryu/tests/test_lib.py
old mode 100755
new mode 100644
index 13bc2af5..49922b4f
--- a/ryu/tests/test_lib.py
+++ b/ryu/tests/test_lib.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-
 import gettext
 import os
 import unittest