diff --git a/src/northbridge/intel/i945/acpi.c b/src/northbridge/intel/i945/acpi.c
index 4212e95350..6e89bd8539 100644
--- a/src/northbridge/intel/i945/acpi.c
+++ b/src/northbridge/intel/i945/acpi.c
@@ -39,7 +39,7 @@ unsigned long acpi_fill_mcfg(unsigned long current)
 	u32 pciexbar_reg;
 	int max_buses;
 
-	dev = dev_find_device(0x8086, 0x27a0, 0);
+	dev = dev_find_slot(0, PCI_DEVFN(0,0));
 	if (!dev)
 		return current;