diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index a327e03..43dbcb0 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -3046,6 +3046,10 @@
 /* Serial */
 HANDLE_IOCTL(TIOCGSERIAL, serial_struct_ioctl)
 HANDLE_IOCTL(TIOCSSERIAL, serial_struct_ioctl)
+#ifdef TIOCGLTC
+COMPATIBLE_IOCTL(TIOCGLTC)
+COMPATIBLE_IOCTL(TIOCSLTC)
+#endif
 /* Usbdevfs */
 HANDLE_IOCTL(USBDEVFS_CONTROL32, do_usbdevfs_control)
 HANDLE_IOCTL(USBDEVFS_BULK32, do_usbdevfs_bulk)