diff --git a/setup.cfg b/setup.cfg
index e23f5f5e..68d10b7e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,8 @@
 [coverage:run]
-omit =
+include=
+    mutagen/*
+    tests/*
+omit=
     mutagen/_senf/*
 
 [flake8]