diff --git a/src/southbridge/intel/lynxpoint/serialio.c b/src/southbridge/intel/lynxpoint/serialio.c
index 23d8125..b5ccfa6 100644
--- a/src/southbridge/intel/lynxpoint/serialio.c
+++ b/src/southbridge/intel/lynxpoint/serialio.c
@@ -22,6 +22,7 @@
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <stdlib.h>
+#include "chip.h"
 #include "pch.h"
 #include "nvs.h"