diff --git a/setup.py b/setup.py
index 87601907..6134b7eb 100644
--- a/setup.py
+++ b/setup.py
@@ -54,6 +54,7 @@ setup(
         'Environment :: Console',
         'Intended Audience :: System Administrators',
         'License :: OSI Approved :: BSD License',
+        'Operating System :: MacOS :: MacOS X',
         'Operating System :: POSIX',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',