--- src/immserv.c.orig	1996-11-08 22:57:56.000000000 +0100
+++ src/immserv.c	2004-01-05 00:56:52.000000000 +0100
@@ -1407,7 +1407,7 @@ char *ip;
 /******************************************************************************/
 void setackalarm(int nop) {}
 /******************************************************************************/
-#ifndef __NetBSD__
+#if !defined(__NetBSD__) && !defined(__FreeBSD__) && !defined(__OpenBSD__)   /* XXX */
 /* routine to put process to sleep */
 int usleep( wait)
 u_int wait;