diff --git a/mt7996/mac.c b/mt7996/mac.c
index 9acff25e..8d857fe5 100644
--- a/mt7996/mac.c
+++ b/mt7996/mac.c
@@ -1095,7 +1095,7 @@ void mt7996_mac_write_txwi(struct mt7996_dev *dev, __le32 *txwi,
 				idx = mvif->basic_rates_idx;
 		}
 
-		txwi[6] |= FIELD_PREP(MT_TXD6_TX_RATE, idx);
+		txwi[6] |= cpu_to_le32(FIELD_PREP(MT_TXD6_TX_RATE, idx));
 		txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE);
 	}
 }