Added character encoding markers for Python 2.x
diff --git a/tests/test_strings.py b/tests/test_strings.py
index e307efb..fe60055 100644
--- a/tests/test_strings.py
+++ b/tests/test_strings.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 #
 #  Copyright 2011 Sybren A. Stüvel <sybren@stuvel.eu>
 #