diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index 7b64db10d1b03cd82786cbb8ca34852c7df6e518..127619a109eda2ef119c9deeecd44793ae53a834 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1334,9 +1334,13 @@ static int __devinit init_hpt366(struct pci_dev *dev)
 static unsigned int __devinit init_chipset_hpt366(struct pci_dev *dev, const char *name)
 {
 	int ret = 0;
-	/* FIXME: Not portable */
+
+	/*
+	 * FIXME: Not portable. Also, why do we enable the ROM in the first place?
+	 * We don't seem to be using it.
+	 */
 	if (dev->resource[PCI_ROM_RESOURCE].start)
-		pci_write_config_byte(dev, PCI_ROM_ADDRESS,
+		pci_write_config_dword(dev, PCI_ROM_ADDRESS,
 			dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
 
 	pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));