diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 7cba516f4..1cf415295 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+2004-04-02  Corinna Vinschen  <corinna@vinschen.de>
+
+	* net.cc (wsock_event::release): Use NULL handle in call to
+	WSAEventSelect to resolve KB 168349.
+
 2004-04-01  Corinna Vinschen  <corinna@vinschen.de>
 
 	* fhandler_socket.cc (fhandler_socket::recvfrom): Rearrange loop
diff --git a/winsup/cygwin/net.cc b/winsup/cygwin/net.cc
index 4f8ee3d12..32b9f1f3e 100644
--- a/winsup/cygwin/net.cc
+++ b/winsup/cygwin/net.cc
@@ -119,7 +119,8 @@ void
 wsock_event::release (int sock)
 {
   int last_err = WSAGetLastError ();
-  WSAEventSelect (sock, event, 0);
+  /* KB 168349: NT4 fails if the event parameter is not NULL. */
+  WSAEventSelect (sock, NULL, 0);
   WSACloseEvent (event);
   unsigned long non_block = 0;
   if (ioctlsocket (sock, FIONBIO, &non_block))