diff --git a/Models/Upload.js b/Models/Upload.js
index 4933d8a..95a22b3 100644
--- a/Models/Upload.js
+++ b/Models/Upload.js
@@ -59,6 +59,8 @@
         return this.files.length;
     };
 
+    // todo: maybe do file upload together with data upload in FormData.
+    // let the module forward the files to the media module?!
     jsOMS.Modules.Models.Media.Upload.prototype.upload = function (formId)
     {
         // TODO: validate file type + file size
diff --git a/Theme/backend/media-single.tpl.php b/Theme/backend/media-single.tpl.php
index f03ce73..1fe240e 100644
--- a/Theme/backend/media-single.tpl.php
+++ b/Theme/backend/media-single.tpl.php
@@ -36,6 +36,8 @@ echo $this->getData('nav')->render();
         </table>
         <?php if(in_array($media->getExtension(), ['gif', 'bmp', 'jpg', 'jpeg', 'png'])) : ?>
             <img src="<?= $this->request->getUri()->getBase() . $media->getPath(); ?>">
+        <?php elseif($media->getExtension() === 'collection') : ?>
+            collection
         <?php else : ?>
             <pre>
             <?php