Added character encoding markers for Python 2.x
diff --git a/tests/test_integers.py b/tests/test_integers.py
index 58af48c..f504e45 100644
--- a/tests/test_integers.py
+++ b/tests/test_integers.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 #
 #  Copyright 2011 Sybren A. Stüvel <sybren@stuvel.eu>
 #