diff --git a/modules/plugin_dbui/navtree.py b/modules/plugin_dbui/navtree.py
index c934fbffeb72afea21d3d577954ae4fb1b0f2f9e..56f6094b74a08aad411847bee4a981577e61a9ab 100644
--- a/modules/plugin_dbui/navtree.py
+++ b/modules/plugin_dbui/navtree.py
@@ -55,7 +55,7 @@ def to_panelWithUrlSelector(formItems,
         
     cfg = {'baseUrl': url,
            'ctrlField': ctrlField,
-           'extfield': extField,
+           'extField': extField,
            'isMathJax': is_mathjax(),
            'panelCfg': None,
            'selectorCfg':None,