diff --git a/www/form/inner.js b/www/form/inner.js
index e8f2d0f92..ad290df1a 100644
--- a/www/form/inner.js
+++ b/www/form/inner.js
@@ -3500,6 +3500,7 @@ define([
         });
 
         if (editable) {
+            if (APP.mainSortable) { APP.mainSortable.destroy(); }
             APP.mainSortable = Sortable.create($container[0], {
                 group: 'nested',
                 direction: "vertical",