diff --git a/Launcher/runtime/engine/api.js b/Launcher/runtime/engine/api.js
index ea33458c..92ccf4a7 100644
--- a/Launcher/runtime/engine/api.js
+++ b/Launcher/runtime/engine/api.js
@@ -71,14 +71,20 @@ var LauncherSettings = LauncherSettingsClass.static;
 
 // Helper JS class API imports
 var JSApplication = null;
+var CheckComboBox = null;
+var CheckModel = null;
+var IndexedCheckModel = null;
+var CheckComboBoxSkin = null;
+var RingProgressIndicator = null;
+var RingProgressIndicatorSkin = null;
 if (typeof JSApplicationClass !== 'undefined') {
     JSApplication = JSApplicationClass.static;
-    var CheckComboBox = CheckComboBoxClass.static;
-    var CheckModel = CheckModelClass.static;
-    var IndexedCheckModel = IndexedCheckModelClass.static;
-    var CheckComboBoxSkin = CheckComboBoxSkinClass.static;
-    var RingProgressIndicator = RingProgressIndicatorClass.static;
-    var RingProgressIndicatorSkin = RingProgressIndicatorSkinClass.static;
+    CheckComboBox = CheckComboBoxClass.static;
+    CheckModel = CheckModelClass.static;
+    IndexedCheckModel = IndexedCheckModelClass.static;
+    CheckComboBoxSkin = CheckComboBoxSkinClass.static;
+    RingProgressIndicator = RingProgressIndicatorClass.static;
+    RingProgressIndicatorSkin = RingProgressIndicatorSkinClass.static;
 }
 
 // API wrapper