diff --git a/tests/proxy_test.py b/tests/proxy_test.py
index 050fe46..b50379e 100644
--- a/tests/proxy_test.py
+++ b/tests/proxy_test.py
@@ -19,7 +19,7 @@ class TestClass(object):
     @staticmethod
     def _load_response(filename):
         with open(filename) as f:
-            return json.loads(f.read(), encoding="utf-8")
+            return json.loads(f.read())
 
     @property
     def login_response(self):