diff --git a/plugins/ktcore/folder/BulkImport.php b/plugins/ktcore/folder/BulkImport.php
index 2de0105..187ed10 100644
--- a/plugins/ktcore/folder/BulkImport.php
+++ b/plugins/ktcore/folder/BulkImport.php
@@ -67,7 +67,7 @@ class KTBulkImportFolderAction extends KTFolderAction {
             'metadata' => $aFields,
         );
 
-        $po =& new JavascriptObserver(&$this);
+        $po =& new JavascriptObserver($this);
         $po->start();
         $oUploadChannel =& KTUploadChannel::getSingleton();
         $oUploadChannel->addObserver($po);
diff --git a/plugins/ktcore/folder/addDocument.php b/plugins/ktcore/folder/addDocument.php
index 0d148ed..a56a088 100644
--- a/plugins/ktcore/folder/addDocument.php
+++ b/plugins/ktcore/folder/addDocument.php
@@ -47,7 +47,7 @@ class KTFolderAddDocumentAction extends KTFolderAction {
     function do_upload() {
         $this->oPage->setBreadcrumbDetails(_("add document"));
         $this->oPage->setTitle(_('Add a document'));
-        $mpo =& new JavascriptObserver(&$this);
+        $mpo =& new JavascriptObserver($this);
         // $mpo =& new KTSinglePageObserver(&$this);
         $oUploadChannel =& KTUploadChannel::getSingleton();
         $oUploadChannel->addObserver($mpo);