diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 16f7a3d2d5ea..4bc52f4a0ad3 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -279,7 +279,7 @@ static struct ath_buf* ath_clone_txbuf(struct ath_softc *sc, struct ath_buf *bf)
 	tbf->aphy = bf->aphy;
 	tbf->bf_mpdu = bf->bf_mpdu;
 	tbf->bf_buf_addr = bf->bf_buf_addr;
-	*(tbf->bf_desc) = *(bf->bf_desc);
+	memcpy(tbf->bf_desc, bf->bf_desc, sc->sc_ah->caps.tx_desc_len);
 	tbf->bf_state = bf->bf_state;
 	tbf->bf_dmacontext = bf->bf_dmacontext;