diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/init.c b/drivers/net/wireless/mediatek/mt76/mt7925/init.c
index 3ce5d6fcc69d..c0c5cb9aff75 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/init.c
@@ -91,6 +91,8 @@ int mt7925_mac_init(struct mt792x_dev *dev)
 
 	mt7925_mac_init_basic_rates(dev);
 
+	memzero_explicit(&dev->mt76.alpha2, sizeof(dev->mt76.alpha2));
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(mt7925_mac_init);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/regd.c b/drivers/net/wireless/mediatek/mt76/mt7925/regd.c
index 292087e882d1..16f56ee879d4 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/regd.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/regd.c
@@ -232,7 +232,8 @@ int mt7925_regd_change(struct mt792x_phy *phy, char *alpha2)
 	    dev->regd_user)
 		return -EINVAL;
 
-	if (mdev->alpha2[0] != '0' && mdev->alpha2[1] != '0')
+	if ((mdev->alpha2[0] && mdev->alpha2[0] != '0') &&
+	    (mdev->alpha2[1] && mdev->alpha2[1] != '0'))
 		return 0;
 
 	/* do not need to update the same country twice */