diff --git a/CameraRoll.js b/CameraRoll.js
index 6acc949e5..0d008ae75 100644
--- a/CameraRoll.js
+++ b/CameraRoll.js
@@ -92,6 +92,8 @@ var getPhotosReturnChecker = createStrictShapeTypeChecker({
 });
 
 class CameraRoll {
+
+  static GroupTypesOptions: Array<string>;
   /**
    * Saves the image with tag `tag` to the camera roll.
    *