diff --git a/drivers/pci/pci-rcar-gen2.c b/drivers/pci/pci-rcar-gen2.c
index cbaba19..d913d53 100644
--- a/drivers/pci/pci-rcar-gen2.c
+++ b/drivers/pci/pci-rcar-gen2.c
@@ -97,7 +97,7 @@ static int rcar_gen2_pci_addr_valid(pci_dev_t d, uint offset)
 
 	/* Only one EHCI/OHCI device built-in */
 	slot = PCI_DEV(d);
-	if (slot > 2)
+	if (slot != 1 && slot != 2)
 		return -EINVAL;
 
 	/* bridge logic only has registers to 0x40 */