diff --git a/source/Ox.UI/js/Form/Ox.ButtonGroup.js b/source/Ox.UI/js/Form/Ox.ButtonGroup.js
index 6d99b71a..b7602344 100644
--- a/source/Ox.UI/js/Form/Ox.ButtonGroup.js
+++ b/source/Ox.UI/js/Form/Ox.ButtonGroup.js
@@ -31,7 +31,7 @@ Ox.ButtonGroup = function(options, self) {
             .addClass('OxButtonGroup');
 
     if (self.options.selectable) {
-        self.optionGroup = Ox.OptionGroup(
+        self.optionGroup = new Ox.OptionGroup(
             self.options.buttons,
             self.options.min,
             self.options.max,
diff --git a/source/Ox.UI/js/Form/Ox.CheckboxGroup.js b/source/Ox.UI/js/Form/Ox.CheckboxGroup.js
index a93f40eb..897ae914 100644
--- a/source/Ox.UI/js/Form/Ox.CheckboxGroup.js
+++ b/source/Ox.UI/js/Form/Ox.CheckboxGroup.js
@@ -28,7 +28,7 @@ Ox.CheckboxGroup = function(options, self) {
             .options(options || {})
             .addClass('OxCheckboxGroup');
 
-    self.optionGroup = Ox.OptionGroup(
+    self.optionGroup = new Ox.OptionGroup(
         self.options.checkboxes,
         self.options.min,
         self.options.max);
diff --git a/source/Ox.UI/js/Form/Ox.Select.js b/source/Ox.UI/js/Form/Ox.Select.js
index cd15189b..97da2fad 100644
--- a/source/Ox.UI/js/Form/Ox.Select.js
+++ b/source/Ox.UI/js/Form/Ox.Select.js
@@ -66,7 +66,7 @@ Ox.Select = function(options, self) {
     });
 
     if (self.options.selectable) {
-        self.optionGroup = Ox.OptionGroup(
+        self.optionGroup = new Ox.OptionGroup(
             self.options.items,
             self.options.min,
             self.options.max
diff --git a/source/Ox.UI/js/Menu/Ox.Menu.js b/source/Ox.UI/js/Menu/Ox.Menu.js
index 2fed7a47..3c1ce623 100644
--- a/source/Ox.UI/js/Menu/Ox.Menu.js
+++ b/source/Ox.UI/js/Menu/Ox.Menu.js
@@ -186,7 +186,7 @@ Ox.Menu = function(options, self) {
                         group: item.group
                     });
                 });
-                self.optionGroups[item.group] = Ox.OptionGroup(
+                self.optionGroups[item.group] = new Ox.OptionGroup(
                     items[i],
                     'min' in item ? item.min : 1,
                     'max' in item ? item.max : 1