diff --git a/src/ltui/mconfdialog.lua b/src/ltui/mconfdialog.lua
index f587492..6c89dd9 100644
--- a/src/ltui/mconfdialog.lua
+++ b/src/ltui/mconfdialog.lua
@@ -20,6 +20,7 @@
 
 -- load modules
 local log          = require("ltui/base/log")
+local table        = require("ltui/base/table")
 local rect         = require("ltui/rect")
 local event        = require("ltui/event")
 local action       = require("ltui/action")