diff --git a/sys/netinet/in_proto.c b/sys/netinet/in_proto.c
index 1d32caf42b90..f7ef48092ee3 100644
--- a/sys/netinet/in_proto.c
+++ b/sys/netinet/in_proto.c
@@ -176,7 +176,7 @@ struct protosw inetsw[] = {
 	.pr_type =		SOCK_STREAM,
 	.pr_domain =		&inetdomain,
 	.pr_protocol =		IPPROTO_SCTP,
-	.pr_flags =		PR_WANTRCVD,
+	.pr_flags =		PR_CONNREQUIRED|PR_WANTRCVD,
 	.pr_input =		sctp_input,
 	.pr_ctlinput =		sctp_ctlinput,
 	.pr_ctloutput =		sctp_ctloutput,
diff --git a/sys/netinet6/in6_proto.c b/sys/netinet6/in6_proto.c
index acc3fe26d46b..4ab14dd23367 100644
--- a/sys/netinet6/in6_proto.c
+++ b/sys/netinet6/in6_proto.c
@@ -207,7 +207,7 @@ struct protosw inet6sw[] = {
 	.pr_type =		SOCK_STREAM,
 	.pr_domain =		&inet6domain,
 	.pr_protocol =		IPPROTO_SCTP,
-	.pr_flags =		PR_WANTRCVD,
+	.pr_flags =		PR_CONNREQUIRED|PR_WANTRCVD,
 	.pr_input =		sctp6_input,
 	.pr_ctlinput =		sctp6_ctlinput,
 	.pr_ctloutput =		sctp_ctloutput,