Issue #21566: Make use of socket.listen() default backlog.
diff --git a/Lib/test/test_kqueue.py b/Lib/test/test_kqueue.py
index bafdeba..0810f21 100644
--- a/Lib/test/test_kqueue.py
+++ b/Lib/test/test_kqueue.py
@@ -89,7 +89,7 @@
     def test_queue_event(self):
         serverSocket = socket.socket()
         serverSocket.bind(('127.0.0.1', 0))
-        serverSocket.listen(1)
+        serverSocket.listen()
         client = socket.socket()
         client.setblocking(False)
         try: