diff --git a/setup.py b/setup.py
index 2418e6162..2ba5ea033 100644
--- a/setup.py
+++ b/setup.py
@@ -175,7 +175,7 @@ def run(self):
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Operating System :: Microsoft :: Windows',
-        'Operating System :: MacOS :: MacOS X'
+        'Operating System :: MacOS :: MacOS X',
         'Operating System :: POSIX :: Linux',
     ],
     keywords=['vizdoom', 'doom', 'ai', 'deep learning', 'reinforcement learning', 'research']