diff --git a/drivers/soc/apple/mailbox.c b/drivers/soc/apple/mailbox.c
index 0cbd172f435e..780199bf351e 100644
--- a/drivers/soc/apple/mailbox.c
+++ b/drivers/soc/apple/mailbox.c
@@ -26,6 +26,7 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
+#include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>