diff --git a/drivers/ata/pata_hpt3x2n.c b/drivers/ata/pata_hpt3x2n.c
index 3d59fe0a408d..2ab9fd6c597f 100644
--- a/drivers/ata/pata_hpt3x2n.c
+++ b/drivers/ata/pata_hpt3x2n.c
@@ -133,7 +133,7 @@ static int hpt3x2n_cable_detect(struct ata_port *ap)
 	/* Restore state */
 	pci_write_config_byte(pdev, 0x5B, scr2);
 
-	if (ata66 & (1 << ap->port_no))
+	if (ata66 & (2 >> ap->port_no))
 		return ATA_CBL_PATA40;
 	else
 		return ATA_CBL_PATA80;