diff --git a/setup.py b/setup.py
index e1abace..9a997a5 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@ from setuptools import setup
 import pymisp
 
 this_directory = path.abspath(path.dirname(__file__))
-with open(path.join(this_directory, 'README.md'), encoding='utf-8') as f:
+with open(path.join(this_directory, 'README.md'), 'r') as f:
     long_description = f.read()
 
 setup(