diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c
index 65c28e5..d7f2da1 100644
--- a/drivers/ata/pata_hpt366.c
+++ b/drivers/ata/pata_hpt366.c
@@ -336,8 +336,8 @@
 {
 	static const struct ata_port_info info_hpt366 = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
-		.mwdma_mask = 0x07,
+		.pio_mask = ATA_PIO4,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA4,
 		.port_ops = &hpt366_port_ops
 	};