diff --git a/usr.sbin/arp/arp.8 b/usr.sbin/arp/arp.8
index 9dbe45a34bd4..d7306d39ef53 100644
--- a/usr.sbin/arp/arp.8
+++ b/usr.sbin/arp/arp.8
@@ -193,7 +193,8 @@ character will mark the rest of the line as a comment.
 .Sh SEE ALSO
 .Xr inet 3 ,
 .Xr arp 4 ,
-.Xr ifconfig 8
+.Xr ifconfig 8 ,
+.Xr ndp 8
 .Sh HISTORY
 The
 .Nm