diff --git a/setup.py b/setup.py
index 18926c44c2819e467c335e4aeed04f573db69ec5..0ced50465e639da02bc6e595a709c6b8334f5c38 100644
--- a/setup.py
+++ b/setup.py
@@ -83,7 +83,7 @@ setup(
         "License :: OSI Approved :: MIT License",
         "Programming Language :: Python :: 3 :: Only",
         "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7"
+        "Programming Language :: Python :: 3.7",
         "Topic :: Scientific/Engineering :: Bio-Informatics"
     ],
     ext_modules=cython_extensions