diff --git a/drivers/acpi/wakeup.c b/drivers/acpi/wakeup.c
index 2d34806..3f29fd5 100644
--- a/drivers/acpi/wakeup.c
+++ b/drivers/acpi/wakeup.c
@@ -8,6 +8,8 @@
 #include <acpi/acpi_drivers.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
+
+#include "internal.h"
 #include "sleep.h"
 
 #define _COMPONENT		ACPI_SYSTEM_COMPONENT