diff --git a/net/sctp/tsnmap.c b/net/sctp/tsnmap.c
index 747d541..f1e40ceb 100644
--- a/net/sctp/tsnmap.c
+++ b/net/sctp/tsnmap.c
@@ -344,7 +344,7 @@
 
 	/* Refresh the gap ack information. */
 	if (sctp_tsnmap_has_gap(map)) {
-		__u16 start, end;
+		__u16 start = 0, end = 0;
 		sctp_tsnmap_iter_init(map, &iter);
 		while (sctp_tsnmap_next_gap_ack(map, &iter,
 						&start,