diff --git a/sys/netinet/sctp_os_bsd.h b/sys/netinet/sctp_os_bsd.h
index 4d2c40b59a4b..7d5cef6d5f09 100644
--- a/sys/netinet/sctp_os_bsd.h
+++ b/sys/netinet/sctp_os_bsd.h
@@ -315,7 +315,6 @@ typedef struct callout sctp_os_timer_t;
 /*************************/
 #define SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index) ((struct ifnet *)ifn)->if_mtu
 #define SCTP_GATHER_MTU_FROM_ROUTE(sctp_ifa, sa, nh) ((uint32_t)((nh != NULL) ? nh->nh_mtu : 0))
-#define SCTP_GATHER_MTU_FROM_INTFC(sctp_ifn) ((sctp_ifn->ifn_p != NULL) ? ((struct ifnet *)(sctp_ifn->ifn_p))->if_mtu : 0)
 
 /*************************/
 /* These are for logging */
diff --git a/sys/netinet/sctp_pcb.c b/sys/netinet/sctp_pcb.c
index 150039ade302..00bb25ecb96d 100644
--- a/sys/netinet/sctp_pcb.c
+++ b/sys/netinet/sctp_pcb.c
@@ -3969,7 +3969,12 @@ sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
 			net->src_addr_selected = 1;
 			/* Now get the interface MTU */
 			if (net->ro._s_addr->ifn_p != NULL) {
-				imtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
+				/*
+				 * XXX: Should we here just use
+				 * net->ro._s_addr->ifn_p->ifn_mtu
+				 */
+				imtu = SCTP_GATHER_MTU_FROM_IFN_INFO(net->ro._s_addr->ifn_p->ifn_p,
+				    net->ro._s_addr->ifn_p->ifn_index);
 			} else {
 				imtu = 0;
 			}