diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
index 1c0d8cf19b8e..49ddca84f786 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
@@ -1167,6 +1167,10 @@ int mt7921_usb_sdio_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
 	if (unlikely(tx_info->skb->len <= ETH_HLEN))
 		return -EINVAL;
 
+	err = skb_cow_head(skb, MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE);
+	if (err)
+		return err;
+
 	if (!wcid)
 		wcid = &dev->mt76.global_wcid;