diff --git a/sys/netinet/sctp_usrreq.c b/sys/netinet/sctp_usrreq.c
index 5c859364f2ce..9a81889ecbb9 100644
--- a/sys/netinet/sctp_usrreq.c
+++ b/sys/netinet/sctp_usrreq.c
@@ -2240,8 +2240,8 @@ sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
 			SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
 
 			if (stcb) {
-				left = (*optsize) - sizeof(struct sctp_getaddresses);
-				*optsize = sizeof(struct sctp_getaddresses);
+				left = (*optsize) - sizeof(sctp_assoc_t);
+				*optsize = sizeof(sctp_assoc_t);
 				sas = (struct sockaddr_storage *)&saddr->addr[0];
 
 				TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
@@ -2315,7 +2315,7 @@ sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
 			if (stcb) {
 				SCTP_TCB_UNLOCK(stcb);
 			}
-			*optsize = sizeof(struct sockaddr_storage) + actual;
+			*optsize = sizeof(sctp_assoc_t) + actual;
 			break;
 		}
 	case SCTP_PEER_ADDR_PARAMS: