diff --git a/server/serial.c b/server/serial.c
index 4d1853c..d677d17 100644
--- a/server/serial.c
+++ b/server/serial.c
@@ -107,6 +107,7 @@
     default_poll_event,           /* poll_event */
     serial_flush,                 /* flush */
     serial_get_fd_type,           /* get_file_info */
+    default_fd_ioctl,             /* ioctl */
     serial_queue_async,           /* queue_async */
     default_fd_reselect_async,    /* reselect_async */
     default_fd_cancel_async       /* cancel_async */