diff --git a/bochs/gui/vncsrv.cc b/bochs/gui/vncsrv.cc
index 6c4d46432..dd09a0947 100644
--- a/bochs/gui/vncsrv.cc
+++ b/bochs/gui/vncsrv.cc
@@ -7,7 +7,7 @@
 //    Donald Becker
 //    http://www.psyon.org
 //
-//  Copyright (C) 2001-2023  The Bochs Project
+//  Copyright (C) 2001-2024  The Bochs Project
 //
 //  This library is free software; you can redistribute it and/or
 //  modify it under the terms of the GNU Lesser General Public
@@ -44,6 +44,10 @@
 // is used to know when we are exporting symbols and when we are importing.
 #define BX_PLUGGABLE
 
+#ifdef __CYGWIN__
+#define __USE_W32_SOCKETS
+#endif
+
 #include "param_names.h"
 #include "iodev.h"
 #include "keymap.h"