$NetBSD$

--- vcl/unx/inc/prex.h.orig	2008-06-03 03:30:57.000000000 +0900
+++ vcl/unx/inc/prex.h	2008-06-03 03:31:38.000000000 +0900
@@ -50,7 +50,7 @@
 extern "C" {
 #endif
 
-#if defined(LINUX) || defined(FREEBSD) || defined(MACOSX) // should really check for xfree86 or for X11R6.1 and higher
+#if defined(LINUX) || defined(FREEBSD) || defined(MACOSX) || defined(NETBSD) // should really check for xfree86 or for X11R6.1 and higher
 #define __XKeyboardExtension__ 1
 #else
 #define __XKeyboardExtension__ 0
