diff --git a/drivers/net/wireless/ath/ath9k/debug_sta.c b/drivers/net/wireless/ath/ath9k/debug_sta.c
index d33cc88a5849d93767ea7fbf3c9b65f95e81a139..d76e6e0120d2c28236163f56de4471c46f397c60 100644
--- a/drivers/net/wireless/ath/ath9k/debug_sta.c
+++ b/drivers/net/wireless/ath/ath9k/debug_sta.c
@@ -128,7 +128,7 @@ void ath_debug_rate_stats(struct ath_softc *sc,
 	rxs = IEEE80211_SKB_RXCB(skb);
 
 	if (IS_HT_RATE(rs->rs_rate)) {
-		if (rxs->rate_idx > ARRAY_SIZE(rstats->ht_stats))
+		if (rxs->rate_idx >= ARRAY_SIZE(rstats->ht_stats))
 			goto exit;
 
 		if (rxs->flag & RX_FLAG_40MHZ)