diff --git a/net/wireless/util.c b/net/wireless/util.c
index 6cba00173a2f8b2b559a97e1be48a61790a0c679..177df03064cf8b018c3ef0e243dca6a693b1cf4c 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -880,7 +880,7 @@ u16 cfg80211_calculate_bitrate(struct rate_info *rate)
 		return rate->legacy;
 
 	/* the formula below does only work for MCS values smaller than 32 */
-	if (rate->mcs >= 32)
+	if (WARN_ON_ONCE(rate->mcs >= 32))
 		return 0;
 
 	modulation = rate->mcs & 7;