diff --git a/docs/changelog.rst b/docs/changelog.rst
index a408e6e..8989232 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -6,7 +6,7 @@ Changelog
 ================
 
 * Add `dynamic_print_values` to show print_values on legend hover. (Fix #279)
-* Fix unparse_color for python 3.5+ compatibility (thanks felixonmars)
+* Fix unparse_color for python 3.5+ compatibility (thanks felixonmars, sjourdois)
 
 
 2.0.8
diff --git a/pygal/test/test_graph.py b/pygal/test/test_graph.py
index ea8c972..8a88246 100644
--- a/pygal/test/test_graph.py
+++ b/pygal/test/test_graph.py
@@ -24,6 +24,7 @@ import pygal
 import uuid
 import sys
 import pytest
+import io
 from pygal.graph.map import BaseMap
 from pygal.util import cut
 from pygal._compat import u
@@ -53,7 +54,7 @@ def test_render_to_file(Chart, datas):
     chart = Chart()
     chart = make_data(chart, datas)
     chart.render_to_file(file_name)
-    with open(file_name) as f:
+    with io.open(file_name, encoding="utf-8") as f:
         assert 'pygal' in f.read()
     os.remove(file_name)
 
diff --git a/setup.py b/setup.py
index 178db9b..29644b2 100644
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@ from setuptools.command.test import test as TestCommand
 class PyTest(TestCommand):
     def finalize_options(self):
         TestCommand.finalize_options(self)
-        self.test_args = []
+        self.test_args = ['-x', 'build/lib/pygal']
         self.test_suite = True
 
     def run_tests(self):