diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
index bd019cddd32..fef3314c16f 100644
--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py
@@ -1,4 +1,6 @@
-# Very rudimentary test of threading module
+"""
+Tests for the threading module.
+"""
 
 import test.support
 from test.support import verbose, strip_python_stderr, import_module