diff --git a/sys/netinet/sctp_asconf.h b/sys/netinet/sctp_asconf.h
index ee9b1a3315cb..fab1b81ff95c 100644
--- a/sys/netinet/sctp_asconf.h
+++ b/sys/netinet/sctp_asconf.h
@@ -1,5 +1,5 @@
 /*	$KAME: sctp_asconf.h,v 1.8 2005/03/06 16:04:16 itojun Exp $	*/
-/*	$NetBSD: sctp_asconf.h,v 1.2 2019/02/24 17:01:52 kamil Exp $ */
+/*	$NetBSD: sctp_asconf.h,v 1.3 2019/06/08 23:23:34 rjs Exp $ */
 
 #ifndef _NETINET_SCTP_ASCONF_H_
 #define _NETINET_SCTP_ASCONF_H_
@@ -43,29 +43,29 @@ struct sockaddr;
 struct sctp_inpcb;
 struct sctp_asconf_ack_chunk;
 
-extern void sctp_asconf_cleanup(struct sctp_tcb *, struct sctp_nets *);
+void sctp_asconf_cleanup(struct sctp_tcb *, struct sctp_nets *);
 
-extern struct mbuf *sctp_compose_asconf(struct sctp_tcb *);
+struct mbuf *sctp_compose_asconf(struct sctp_tcb *);
 
-extern void sctp_handle_asconf(struct mbuf *, unsigned int, struct sctp_asconf_chunk *,
+void sctp_handle_asconf(struct mbuf *, unsigned int, struct sctp_asconf_chunk *,
 	struct sctp_tcb *, struct sctp_nets *);
 
-extern void sctp_handle_asconf_ack(struct mbuf *, int,
+void sctp_handle_asconf_ack(struct mbuf *, int,
 	struct sctp_asconf_ack_chunk *, struct sctp_tcb *, struct sctp_nets *);
 
-extern uint32_t sctp_addr_mgmt_ep_sa(struct sctp_inpcb *, struct sockaddr *,
+uint32_t sctp_addr_mgmt_ep_sa(struct sctp_inpcb *, struct sockaddr *,
 	uint16_t);
 
-extern void sctp_add_ip_address(struct ifaddr *);
+void sctp_add_ip_address(struct ifaddr *);
 
-extern void sctp_delete_ip_address(struct ifaddr *);
+void sctp_delete_ip_address(struct ifaddr *);
 
-extern int32_t sctp_set_primary_ip_address_sa(struct sctp_tcb *,
+int32_t sctp_set_primary_ip_address_sa(struct sctp_tcb *,
 	struct sockaddr *);
 
-extern void sctp_set_primary_ip_address(struct ifaddr *);
+void sctp_set_primary_ip_address(struct ifaddr *);
 
-extern void sctp_check_address_list(struct sctp_tcb *, struct mbuf *, int, int,
+void sctp_check_address_list(struct sctp_tcb *, struct mbuf *, int, int,
 	struct sockaddr *, uint16_t, uint16_t, uint16_t, uint16_t);
 
 #endif /* _KERNEL */
diff --git a/sys/netinet/sctp_pcb.h b/sys/netinet/sctp_pcb.h
index cf9c3ca1043b..ec583387e24f 100644
--- a/sys/netinet/sctp_pcb.h
+++ b/sys/netinet/sctp_pcb.h
@@ -1,5 +1,5 @@
 /*	$KAME: sctp_pcb.h,v 1.21 2005/07/16 01:18:47 suz Exp $	*/
-/*	$NetBSD: sctp_pcb.h,v 1.1 2015/10/13 21:28:35 rjs Exp $ */
+/*	$NetBSD: sctp_pcb.h,v 1.2 2019/06/08 23:23:34 rjs Exp $ */
 
 #ifndef __SCTP_PCB_H__
 #define __SCTP_PCB_H__
@@ -754,7 +754,7 @@ int
 sctp_initiate_iterator(asoc_func af, uint32_t, uint32_t, void *, uint32_t,
 		       end_func ef, struct sctp_inpcb *);
 
-extern void in6_sin6_2_sin (struct sockaddr_in *,
+void in6_sin6_2_sin (struct sockaddr_in *,
                             struct sockaddr_in6 *sin6);
 
 #endif /* _KERNEL */