diff --git a/setup.cfg b/setup.cfg
index b0acd4d..7fd6e1f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -9,7 +9,7 @@ author = Tom Schimansky
 license = Creative Commons Zero v1.0 Universal
 license_file = LICENSE
 classifiers =
-    License :: MIT
+    License :: OSI Approved :: MIT License
     Operating System :: OS Independent
     Programming Language :: Python :: 3 :: Only