diff --git a/drivers/net/wireless/marvell/mwifiex/11n_aggr.c b/drivers/net/wireless/marvell/mwifiex/11n_aggr.c
index a75013ac8..448ba72de 100644
--- a/drivers/net/wireless/marvell/mwifiex/11n_aggr.c
+++ b/drivers/net/wireless/marvell/mwifiex/11n_aggr.c
@@ -200,8 +200,7 @@ mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv,
 
 	do {
 		/* Check if AMSDU can accommodate this MSDU */
-		if ((skb_aggr->len + skb_src->len + LLC_SNAP_LEN) >
-		    adapter->tx_buf_size)
+		if (skb_tailroom(skb_aggr) < (skb_src->len + LLC_SNAP_LEN))
 			break;
 
 		skb_src = skb_dequeue(&pra_list->skb_head);