diff --git a/southbridge/amd/cs5536/smbus_initram.c b/southbridge/amd/cs5536/smbus_initram.c
index 8304f43c20..600b720bf1 100644
--- a/southbridge/amd/cs5536/smbus_initram.c
+++ b/southbridge/amd/cs5536/smbus_initram.c
@@ -19,7 +19,9 @@
 
 #include <types.h>
 #include <console.h>
+#include <globalvars.h>
 #include <io.h>
+#include <cpu.h>
 #include "cs5536.h"
 
 #define SMBUS_ERROR			-1