diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index f2405258a6d39f8a7b40f87357a94cc5ab9d2d70..edd0e74b2732bfdc6693fd2c9cc39fe6c997a50b 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -2753,7 +2753,8 @@ ath10k_update_per_peer_tx_stats(struct ath10k *ar,
 				struct ath10k_per_peer_tx_stats *peer_stats)
 {
 	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
-	u8 rate = 0, rate_idx = 0, sgi;
+	u8 rate = 0, sgi;
+	s8 rate_idx = 0;
 	struct rate_info txrate;
 
 	lockdep_assert_held(&ar->data_lock);