diff --git a/drivers/staging/vt6655/rf.c b/drivers/staging/vt6655/rf.c
index 27841aa0ca87882997536290932874391e731648..a6eabde6b30cb5a29a4c248da7d8bdf7ab33c754 100644
--- a/drivers/staging/vt6655/rf.c
+++ b/drivers/staging/vt6655/rf.c
@@ -788,6 +788,9 @@ bool RFbSetPower(
 	case RATE_2M:
 	case RATE_5M:
 	case RATE_11M:
+		if (uCH > CB_MAX_CHANNEL_24G)
+			return false;
+
 		byPwr = priv->abyCCKPwrTbl[uCH];
 		byPwrdBm = priv->abyCCKDefaultPwr[uCH];
 		break;