diff --git a/source/Ox.UI/js/Calendar/CalendarEditor.js b/source/Ox.UI/js/Calendar/CalendarEditor.js
index cf76eb39..27b0c66c 100644
--- a/source/Ox.UI/js/Calendar/CalendarEditor.js
+++ b/source/Ox.UI/js/Calendar/CalendarEditor.js
@@ -141,7 +141,6 @@ Ox.CalendarEditor = function(options, self) {
             },
             operator: '-',
             title: 'Duration',
-            unique: true,
             visible: true,
             width: 256
         },
@@ -239,7 +238,8 @@ Ox.CalendarEditor = function(options, self) {
             pageLength: self.options.pageLength,
             scrollbarVisible: true,
             selected: self.options.selected ? [self.options.selected] : [],
-            sort: self.options.sort
+            sort: self.options.sort,
+            unique: 'id'
         })
         .bindEvent({
             'delete': removeEvent,
diff --git a/source/Ox.UI/js/Form/FileInput.js b/source/Ox.UI/js/Form/FileInput.js
index bf3b4fe9..c4b992c7 100644
--- a/source/Ox.UI/js/Form/FileInput.js
+++ b/source/Ox.UI/js/Form/FileInput.js
@@ -141,13 +141,13 @@ Ox.FileInput = function(options, self) {
                                 });
                         },
                         id: 'id',
-                        unique: true,
                         visible: true,
                         width: 28
                     }
                 ],
                 items: getItems(),
-                sort: [{key: 'name', operator: '+'}]
+                sort: [{key: 'name', operator: '+'}],
+                unique: 'id'
             })
             .css({
                 left: 0,
diff --git a/source/Ox.UI/js/Form/FormPanel.js b/source/Ox.UI/js/Form/FormPanel.js
index 89024239..ecc9efda 100644
--- a/source/Ox.UI/js/Form/FormPanel.js
+++ b/source/Ox.UI/js/Form/FormPanel.js
@@ -23,7 +23,6 @@ Ox.FormPanel = function(options, self) {
         columns: [
             {
                 id: 'id',
-                unique: true,
                 visible: false
             },
             {
@@ -63,6 +62,7 @@ Ox.FormPanel = function(options, self) {
         min: 1,
         selected: [self.options.form[0].id],
         sort: [{key: 'id', operator: '+'}],
+        unique: 'id',
         width: 256
     }).bindEvent({
         select: function(data) {
diff --git a/source/Ox.UI/js/List/Chart.js b/source/Ox.UI/js/List/Chart.js
index ead4c2be..376ef454 100644
--- a/source/Ox.UI/js/List/Chart.js
+++ b/source/Ox.UI/js/List/Chart.js
@@ -176,7 +176,8 @@ Ox.Chart = function(options, self) {
                 min: 0,
                 pageLength: self.items.length,
                 sort: [self.options.sort],
-                width: self.options.width
+                width: self.options.width,
+                unique: 'key'
             })
             .css({
                 left: 0,
diff --git a/source/Ox.UI/js/Map/MapEditor.js b/source/Ox.UI/js/Map/MapEditor.js
index 24b49087..8e9303ec 100644
--- a/source/Ox.UI/js/Map/MapEditor.js
+++ b/source/Ox.UI/js/Map/MapEditor.js
@@ -76,14 +76,6 @@ Ox.MapEditor = function(options, self) {
     };
 
     self.columns = [
-        {
-            addable: false, // fixme: implement
-            id: 'id',
-            title: 'Id',
-            unique: true,
-            visible: false,
-            width: 32
-        },
         {
             format: function(value, data) {
                 return data.type
@@ -345,7 +337,8 @@ Ox.MapEditor = function(options, self) {
             pageLength: self.options.pageLength,
             scrollbarVisible: true,
             selected: self.options.selected ? [self.options.selected] : [],
-            sort: self.options.sort
+            sort: self.options.sort,
+            unique: 'id'
         })
         .bindEvent({
             'delete': removeItem,