--- Libc/Libc-391.1.21/i386/sys/ATputmsg.s
+++ Libc/Libc-391.5.18/i386/sys/ATputmsg.s
@@ -23,7 +23,7 @@
 /*
  * Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved
  */
-#include "SYS.h"
+#include <SYS.h>
 
 UNIX_SYSCALL(ATputmsg, 3)
 	ret