diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c
index deffaefcf41d..420e7678330f 100644
--- a/drivers/tty/tty_ioctl.c
+++ b/drivers/tty/tty_ioctl.c
@@ -773,8 +773,8 @@ int tty_mode_ioctl(struct tty_struct *tty, struct file *file,
 	case TCSETX:
 	case TCSETXW:
 	case TCSETXF:
-		return -EINVAL;
-#endif		
+		return -ENOTTY;
+#endif
 	case TIOCGSOFTCAR:
 		copy_termios(real_tty, &kterm);
 		ret = put_user((kterm.c_cflag & CLOCAL) ? 1 : 0,