diff --git a/sys/netinet/sctp_pcb.c b/sys/netinet/sctp_pcb.c
index 42df7e434c2..b5ca4b53075 100644
--- a/sys/netinet/sctp_pcb.c
+++ b/sys/netinet/sctp_pcb.c
@@ -2338,6 +2338,7 @@ sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
 		 * in protosw
 		 */
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
+		so->so_pcb = NULL;
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
 		return (EOPNOTSUPP);
 	}
@@ -2356,6 +2357,7 @@ sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
 	if (inp->sctp_tcbhash == NULL) {
 		SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
+		so->so_pcb = NULL;
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
 		return (ENOBUFS);
 	}