im = AF_MAX - 1;
+			lim = AF_MAX;
 		} else				/* dump only one table */
 			i = lim = af;
 
diff --git a/sys/netlink/route/rt.c b/sys/netlink/route/rt.c
index 810ed219df27..fac174e01efd 100644
--- a/sys/netlink/route/rt.c
+++ b/sys/netlink/route/rt.c
@@ -960,7 +960,7 @@ rtnl_handle_newroute(struct nlmsghdr *hdr, struct nlpcb *nlp,
 	/* pre-2.6.19 Linux API compatibility */
 	if (attrs.rtm_table > 0 && attrs.rta_table == 0)
 		attrs.rta_table = attrs.rtm_table;
-	if (attrs.rta_table >= V_rt_numfibs || attrs.rtm_family >= AF_MAX) {
+	if (attrs.rta_table >= V_rt_numfibs || attrs.rtm_family > AF_MAX) {
 		NLMSG_REPORT_ERR_MSG(npt, "invalid fib");
 		return (EINVAL);
 	}
@@ -1023,7 +1023,7 @@ rtnl_handle_delroute(struct nlmsghdr *hdr, struct nlpcb *nlp,
 		return (ESRCH);
 	}
 
-	if (attrs.rta_table >= V_rt_numfibs || attrs.rtm_family >= AF_MAX) {
+	if (attrs.rta_table >= V_rt_numfibs || attrs.rtm_family > AF_MAX) {
 		NLMSG_REPORT_ERR_MSG(npt, "invalid fib");
 		return (EINVAL);
 	}
@@ -1046,7 +1046,7 @@ rtnl_handle_getroute(struct nlmsghdr *hdr, struct nlpcb *nlp, struct nl_pstate *
 	if (error != 0)
 		return (error);
 
-	if (attrs.rta_table >= V_rt_numfibs || attrs.rtm_family >= AF_MAX) {
+	if (attrs.rta_table >= V_rt_numfibs || attrs.rtm_family > AF_MAX) {
 		NLMSG_REPORT_ERR_MSG(npt, "invalid fib");
 		return (EINVAL);
 	}
diff --git a/sys/sys/socket.h b/sys/sys/socket.h
index ce6fe421d44b..b2afc735a383 100644
--- a/sys/sys/socket.h
+++ b/sys/sys/socket.h
@@ -271,9 +271,7 @@ struct accept_filter_arg {
 #define	AF_INET6_SDP	42		/* OFED Socket Direct Protocol ipv6 */
 #define	AF_HYPERV	43		/* HyperV sockets */
 #define	AF_DIVERT	44		/* divert(4) */
-
-#define	AF_MAX		45
-
+#define	AF_MAX		44
 /*
  * When allocating a new AF_ constant, please only allocate
  * even numbered constants for FreeBSD until 134 as odd numbered AF_