diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,7 @@ setup(
     url='https://github.com/alexandershov/mess',
     keywords=['utilities', 'iterators'],
     classifiers=[
-        'Programming Language :: Python :: 2.7'
+        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3.4'
     ],
 )
Add missing comma

Classifiers were concatenated.