diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c
index f2b83eabc7c7..a098ba8eaab6 100644
--- a/drivers/ata/pata_hpt366.c
+++ b/drivers/ata/pata_hpt366.c
@@ -382,10 +382,10 @@ static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 	/* PCI clocking determines the ATA timing values to use */
 	/* info_hpt366 is safe against re-entry so we can scribble on it */
 	switch((reg1 & 0x700) >> 8) {
-		case 5:
+		case 9:
 			hpriv = &hpt366_40;
 			break;
-		case 9:
+		case 5:
 			hpriv = &hpt366_25;
 			break;
 		default: