diff --git a/src/include/server.h b/src/include/server.h
index 97c5b325..ca6d4c86 100644
--- a/src/include/server.h
+++ b/src/include/server.h
@@ -90,8 +90,9 @@ void __mg_set_active_client (MG_Client* client);
 void __mg_start_server_desktop (void);
 int __mg_post_msg_by_znode (const ZORDERINFO* zi, int znode,
                 int message, WPARAM wParam, LPARAM lParam);
-intptr_t __mg_do_zorder_operation (int cli, const ZORDEROPINFO* info);
-intptr_t __mg_do_zorder_maskrect_operation (int cli, const ZORDERMASKRECTOPINFO* info);
+intptr_t __mg_do_zorder_operation (int cli, const ZORDEROPINFO* info, int fd);
+intptr_t __mg_do_zorder_maskrect_operation (int cli,
+                const ZORDERMASKRECTOPINFO* info);
 int __mg_remove_all_znodes_of_client (int cli);
 
 int __mg_handle_normal_mouse_move (const ZORDERINFO* zi, int x, int y);