--- src/usr.sbin/rtsold/rtsol.c	2005/02/17 14:00:10	1.4
+++ src/usr.sbin/rtsold/rtsol.c	2005/12/05 00:56:37	1.5
@@ -79,7 +79,7 @@ static struct sockaddr_in6 sin6_allroute
 };
 
 int
-sockopen()
+sockopen(void)
 {
 	int on;
 	struct icmp6_filter filt;