diff --git a/Lib/test/test_socketserver.py b/Lib/test/test_socketserver.py
index 0ab95d1..6819f30 100644
--- a/Lib/test/test_socketserver.py
+++ b/Lib/test/test_socketserver.py
@@ -61,6 +61,7 @@
     testcase.assertEquals(72 << 8, status)
 
 
+@unittest.skipUnless(threading, 'Threading required for this test.')
 class SocketServerTest(unittest.TestCase):
     """Test all socket servers."""