--- transports/mailbox/mailbox.c.orig	2010-01-21 14:29:58.000000000 +0100
+++ transports/mailbox/mailbox.c	2010-01-21 14:30:06.000000000 +0100
@@ -159,7 +159,7 @@
 #endif	/* HAVE_SOCKET */
 
 #ifdef HAVE_PROTOCOLS_RWHOD_H
-#include <utmp.h>
+#include <utmpx.h>
 #include <protocols/rwhod.h>
 #define RWHODIR		"/var/spool/rwho"
 #define	WHDRSIZE	(sizeof (wd) - sizeof (wd.wd_we))