diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c
index 3e4fa6b6f25..5114a2d30bf 100644
--- a/net/dccp/ccids/ccid2.c
+++ b/net/dccp/ccids/ccid2.c
@@ -179,16 +179,11 @@ static void ccid2_change_l_ack_ratio(struct sock *sk, int val)
 	dp->dccps_l_ack_ratio = val;
 }
 
-static void ccid2_change_cwnd(struct ccid2_hc_tx_sock *hctx, int val)
+static void ccid2_change_cwnd(struct ccid2_hc_tx_sock *hctx, u32 val)
 {
-	if (val == 0)
-		val = 1;
-
 	/* XXX do we need to change ack ratio? */
-	ccid2_pr_debug("change cwnd to %d\n", val);
-
-	BUG_ON(val < 1);
-	hctx->ccid2hctx_cwnd = val;
+	hctx->ccid2hctx_cwnd = val? : 1;
+	ccid2_pr_debug("changed cwnd to %u\n", hctx->ccid2hctx_cwnd);
 }
 
 static void ccid2_change_srtt(struct ccid2_hc_tx_sock *hctx, long val)
diff --git a/net/dccp/ccids/ccid2.h b/net/dccp/ccids/ccid2.h
index ebd79499c85..d9daa534c9b 100644
--- a/net/dccp/ccids/ccid2.h
+++ b/net/dccp/ccids/ccid2.h
@@ -50,7 +50,7 @@ struct ccid2_seq {
  * @ccid2hctx_rpdupack - dupacks since rpseq
 */
 struct ccid2_hc_tx_sock {
-	int			ccid2hctx_cwnd;
+	u32			ccid2hctx_cwnd;
 	int			ccid2hctx_ssacks;
 	int			ccid2hctx_acks;
 	unsigned int		ccid2hctx_ssthresh;