diff --git a/sys/netinet6/nd6_nbr.c b/sys/netinet6/nd6_nbr.c
index 7bca7fa59ac..cd7119c9ccb 100644
--- a/sys/netinet6/nd6_nbr.c
+++ b/sys/netinet6/nd6_nbr.c
@@ -514,7 +514,8 @@ nd6_ns_output_fib(struct ifnet *ifp, const struct in6_addr *saddr6,
 			 * Do not send NS for CARP address if we are not
 			 * the CARP master.
 			 */
-			if (ifa != NULL && !(*carp_master_p)(ifa)) {
+			if (ifa != NULL && ifa->ifa_carp != NULL &&
+			    !(*carp_master_p)(ifa)) {
 				log(LOG_DEBUG,
 				    "nd6_ns_output: NS from BACKUP CARP address %s\n",
 				    ip6_sprintf(ip6buf, &ip6->ip6_src));