diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 3fef26d..22fc28e 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -324,7 +324,7 @@
 	rbit = rate->idx % 8;
 
 	/* sanity check */
-	if (ridx < 0 || ridx > IEEE80211_HT_MCS_MASK_LEN)
+	if (ridx < 0 || ridx >= IEEE80211_HT_MCS_MASK_LEN)
 		return false;
 
 	/* See whether the selected rate or anything below it is allowed. */
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index f1681e2..fe27476 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5410,7 +5410,7 @@
 		rbit = BIT(rates[i] % 8);
 
 		/* check validity */
-		if ((ridx < 0) || (ridx > IEEE80211_HT_MCS_MASK_LEN))
+		if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
 			return false;
 
 		/* check availability */