diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
index 012248efaf6f45867f427e615cf6bb788596e7ff..db039f2ce6554719556e7427775c246f3bb4f451 100644
--- a/drivers/bluetooth/hci_h5.c
+++ b/drivers/bluetooth/hci_h5.c
@@ -119,7 +119,7 @@ static u8 h5_cfg_field(struct h5 *h5)
 	u8 field = 0;
 
 	/* Sliding window size (first 3 bits) */
-	field |= (h5->tx_win & 7);
+	field |= (h5->tx_win & 0x07);
 
 	return field;
 }