diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h
index d6729281ec507d6d62eafba6cd9a2b5c30ec48a1..67d78dc553e1de1a7bcef97f5a847885f3049552 100644
--- a/include/linux/tty_flip.h
+++ b/include/linux/tty_flip.h
@@ -2,6 +2,8 @@
 #ifndef _LINUX_TTY_FLIP_H
 #define _LINUX_TTY_FLIP_H
 
+#include <linux/tty.h>
+
 extern int tty_buffer_set_limit(struct tty_port *port, int limit);
 extern unsigned int tty_buffer_space_avail(struct tty_port *port);
 extern int tty_buffer_request_room(struct tty_port *port, size_t size);