diff --git a/src/mainboard/getac/p470/mainboard_smi.c b/src/mainboard/getac/p470/mainboard_smi.c
index 6831d2e706..47dd3bce85 100644
--- a/src/mainboard/getac/p470/mainboard_smi.c
+++ b/src/mainboard/getac/p470/mainboard_smi.c
@@ -25,7 +25,6 @@
 #include <cpu/x86/smm.h>
 #include "southbridge/intel/i82801gx/i82801gx.h"
 #include "southbridge/intel/i82801gx/nvs.h"
-#include "northbridge/intel/i945/udelay.c"
 #include "ec.c"
 
 #define MAX_LCD_BRIGHTNESS 0xd8
diff --git a/src/northbridge/intel/i945/Makefile.inc b/src/northbridge/intel/i945/Makefile.inc
index 1dd8d117ea..7d7cb5dfd5 100644
--- a/src/northbridge/intel/i945/Makefile.inc
+++ b/src/northbridge/intel/i945/Makefile.inc
@@ -26,3 +26,5 @@ romstage-y += raminit.c
 romstage-y += early_init.c
 romstage-y += errata.c
 romstage-y += debug.c
+
+smm-y += udelay.c