diff --git a/drivers/mailbox/sandbox-mbox-test.c b/drivers/mailbox/sandbox-mbox-test.c
index a2cfde2..ffd4674 100644
--- a/drivers/mailbox/sandbox-mbox-test.c
+++ b/drivers/mailbox/sandbox-mbox-test.c
@@ -3,6 +3,7 @@
  * Copyright (c) 2016, NVIDIA CORPORATION.
  */
 
+#include <common.h>
 #include <dm.h>
 #include <mailbox.h>
 #include <malloc.h>