diff --git a/tests/test_client.py b/tests/test_client.py
index b151906..72adb14 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+"""Unit tests for the uosc.client module."""
 
 import sys
 import time
diff --git a/tests/test_server.py b/tests/test_server.py
index fab1d10..3632343 100644
--- a/tests/test_server.py
+++ b/tests/test_server.py
@@ -1,4 +1,4 @@
-# -*- coding: utf-8 -*-
+"""Unit tests for the uosc.server module."""
 
 import time
 import unittest