diff --git a/src/northbridge/intel/i945/i945.h b/src/northbridge/intel/i945/i945.h
index 20558b3..5275d1b 100644
--- a/src/northbridge/intel/i945/i945.h
+++ b/src/northbridge/intel/i945/i945.h
@@ -31,6 +31,7 @@
 #define INT15_5F35_CL_DISPLAY_LCD2		(1 << 7)
 
 /* Device 0:0.0 PCI configuration space (Host Bridge) */
+#define HOST_BRIDGE	PCI_DEV(0, 0, 0)
 
 #define EPBAR		0x40
 #define MCHBAR		0x44
@@ -88,6 +89,7 @@
 
 
 /* Device 0:2.0 PCI configuration space (Graphics Device) */
+#define IGD_DEV		PCI_DEV(0, 2, 0)
 
 #define GMADR		0x18
 #define GTTADR		0x1c