diff --git a/src/iodine.c b/src/iodine.c
index a7b96b3..b057973 100644
--- a/src/iodine.c
+++ b/src/iodine.c
@@ -71,8 +71,8 @@ print_usage()
 
 	fprintf(stderr, "Usage: %s [-v] [-h] [-V sec] [-f] [-r] [-u user] [-t chrootdir] [-d device] "
 			"[-w downfrags] [-W upfrags] [-i sec -j sec] [-I sec] [-c 0|1] [-C 0|1] [-s ms] "
-			"[-P password] [-m maxfragsize] [-M maxlen] [-T type] [-O enc] [-L 0|1] "
-			"[-z context] [-F pidfile] topdomain [nameserver1 [nameserver2 [nameserverN ...]]]\n", __progname);
+			"[-P password] [-m maxfragsize] [-M maxlen] [-T type] [-O enc] [-L 0|1] [-R rdomain] "
+			"[-z context] [-F pidfile] topdomain [nameserver1 [nameserver2 [...]]]\n", __progname);
 }
 
 static void
@@ -118,6 +118,7 @@ help()
 	fprintf(stderr, "  -t dir to chroot to directory dir\n");
 	fprintf(stderr, "  -d device to set tunnel device name\n");
 	fprintf(stderr, "  -z context, to apply specified SELinux context after initialization\n");
+	fprintf(stderr, "  -R routing domain (OpenBSD only)\n");
 	fprintf(stderr, "  -F pidfile to write pid to a file\n\n");
 
 	fprintf(stderr, "nameserver is the IP/hostname of the relaying nameserver(s).\n");
diff --git a/src/iodined.c b/src/iodined.c
index 643d751..4a87d9c 100644
--- a/src/iodined.c
+++ b/src/iodined.c
@@ -154,13 +154,11 @@ static void
 print_usage() {
 	extern char *__progname;
 
-	fprintf(stderr, "Usage: %s [-v] [-h] "
-		"[-4] [-6] [-c] [-s] [-f] [-D] [-u user] "
-		"[-t chrootdir] [-d device] [-m mtu] [-z context] "
-		"[-l ipv4 listen address] [-L ipv6 listen address] "
-		"[-p port] [-n external ip] [-b dnsport] "
-		"[-P password] [-F pidfile] [-i max idle time] "
-		"tunnel_ip[/netmask] topdomain\n", __progname);
+	fprintf(stderr, "Usage: %s [-v] [-h] [-4] [-6] [-c] [-s] [-f] [-D] "
+		"[-u user] [-t chrootdir] [-d device] [-m mtu] [-z context] "
+		"[-l ipv4 listen address] [-L ipv6 listen address] [-p port] "
+		"[-n external ip] [-b dnsport] [-P password] [-F pidfile] "
+		"[-i max idle time] tunnel_ip[/netmask] topdomain\n", __progname);
 }
 
 static void