$NetBSD$
--- acp.c.orig	2006-03-09 22:31:38.000000000 +0100
+++ acp.c	2006-03-10 21:55:31.000000000 +0100
@@ -24,8 +24,11 @@
 
 #include <errno.h>
 #include <syslog.h>
+#if defined (__NetBSD__)
+#include <sys/wait.h>
+#else
 #include <wait.h>
-
+#endif
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
