diff --git a/test/test_api_usage.py b/test/test_api_usage.py
index b85388cdc..b2bfe0d39 100644
--- a/test/test_api_usage.py
+++ b/test/test_api_usage.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 import unittest
 import json as py_json