diff --git a/include/linux/serial.h b/include/linux/serial.h
index 1ea8d9265bf67c5bc52d1a43b2557d9ae661c2df..9136cc5608c3df2b15145ab7f1fbe09c966fd8f9 100644
--- a/include/linux/serial.h
+++ b/include/linux/serial.h
@@ -10,8 +10,9 @@
 #ifndef _LINUX_SERIAL_H
 #define _LINUX_SERIAL_H
 
-#ifdef __KERNEL__
 #include <linux/types.h>
+
+#ifdef __KERNEL__
 #include <asm/page.h>
 
 /*