diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index 0b3d818..c0380cf 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -1252,6 +1252,7 @@
 	 */
 
 	sack_a_rwnd = ntohl(sack->a_rwnd);
+	asoc->peer.zero_window_announced = !sack_a_rwnd;
 	outstanding = q->outstanding_bytes;
 
 	if (outstanding < sack_a_rwnd)