diff --git a/setup.py b/setup.py
index 9271fde..4c68124 100755
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,6 @@
 # adapted from mne-python
 
 import os
-from os import path as op
 
 from setuptools import setup
 
@@ -49,11 +48,11 @@
               'codespell_lib.data',
           ],
           package_data={'codespell_lib': [
-              op.join('data', 'dictionary*.txt'),
-              op.join('data', 'linux-kernel.exclude'),
+              os.path.join('data', 'dictionary*.txt'),
+              os.path.join('data', 'linux-kernel.exclude'),
           ]},
           exclude_package_data={'codespell_lib': [
-              op.join('tests', '*'),
+              os.path.join('tests', '*'),
           ]},
           entry_points={
               'console_scripts': [