diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c
index 0713872..a742efa 100644
--- a/drivers/ata/pata_hpt366.c
+++ b/drivers/ata/pata_hpt366.c
@@ -27,7 +27,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME	"pata_hpt366"
-#define DRV_VERSION	"0.6.1"
+#define DRV_VERSION	"0.6.2"
 
 struct hpt_clock {
 	u8	xfer_speed;
@@ -180,9 +180,9 @@
 		if (hpt_dma_blacklisted(adev, "UDMA",  bad_ata33))
 			mask &= ~ATA_MASK_UDMA;
 		if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
-			mask &= ~(0x07 << ATA_SHIFT_UDMA);
+			mask &= ~(0xF8 << ATA_SHIFT_UDMA);
 		if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
-			mask &= ~(0x0F << ATA_SHIFT_UDMA);
+			mask &= ~(0xF0 << ATA_SHIFT_UDMA);
 	}
 	return ata_pci_default_filter(adev, mask);
 }