diff --git a/sys/netinet/sctp_input.c b/sys/netinet/sctp_input.c
index f3705ee0f747..8c5924c5b2c2 100644
--- a/sys/netinet/sctp_input.c
+++ b/sys/netinet/sctp_input.c
@@ -5594,9 +5594,8 @@ sctp_common_input_processing(struct mbuf **mm, int iphlen, int offset, int lengt
 	if (!TAILQ_EMPTY(&stcb->asoc.asconf_send_queue) ||
 	    cnt_ctrl_ready ||
 	    stcb->asoc.trigger_reset ||
-	    ((un_sent) &&
-	    (stcb->asoc.peers_rwnd > 0 ||
-	    (stcb->asoc.peers_rwnd <= 0 && stcb->asoc.total_flight == 0)))) {
+	    ((un_sent > 0) &&
+	    (stcb->asoc.peers_rwnd > 0 || stcb->asoc.total_flight == 0))) {
 		SCTPDBG(SCTP_DEBUG_INPUT3, "Calling chunk OUTPUT\n");
 		sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CONTROL_PROC, SCTP_SO_NOT_LOCKED);
 		SCTPDBG(SCTP_DEBUG_INPUT3, "chunk OUTPUT returns\n");