diff --git a/mt7921/main.c b/mt7921/main.c
index 70df98cf..782d84a8 100644
--- a/mt7921/main.c
+++ b/mt7921/main.c
@@ -490,7 +490,7 @@ mt7921_sniffer_interface_iter(void *priv, u8 *mac, struct ieee80211_vif *vif)
 
 void mt7921_set_runtime_pm(struct mt7921_dev *dev)
 {
-	struct ieee80211_hw *hw = dev->mphy.hw;
+	struct ieee80211_hw *hw = mt76_hw(dev);
 	struct mt76_connac_pm *pm = &dev->pm;
 	bool monitor = !!(hw->conf.flags & IEEE80211_CONF_MONITOR);