diff --git a/include/linux/tty.h b/include/linux/tty.h
index 196c352a5ce89ab4cdccd633d6ad14913059e924..e33ea1a0c2d0e2403f4d5390696e6152519cc21f 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -435,7 +435,6 @@ extern int is_ignored(int sig);
 extern int tty_signal(int sig, struct tty_struct *tty);
 extern void tty_hangup(struct tty_struct *tty);
 extern void tty_vhangup(struct tty_struct *tty);
-extern void tty_unhangup(struct file *filp);
 extern int tty_hung_up_p(struct file *filp);
 extern void do_SAK(struct tty_struct *tty);
 extern void __do_SAK(struct tty_struct *tty);