diff --git a/application/module/Reference/Reference.php b/application/module/Reference/Reference.php
index 37cce94d..f43ab11e 100644
--- a/application/module/Reference/Reference.php
+++ b/application/module/Reference/Reference.php
@@ -99,7 +99,7 @@ class Reference
 	public function uploadReferencePdf($file)
 	{
 		$files = new Files();
-		$file_info = $files->upload($file,'reference/',true);
+		$file_info = $files->upload($file,'literature/',true);
 		
 		if(isset($file_info['error']) && !empty($file_info['error']))
 		{
@@ -108,7 +108,7 @@ class Reference
 		
 		$file_data = array(
 			'filename' => $file_info['file_url'],
-			'filetype' => 'reference',
+			'filetype' => 'literature',
 			'filedesc' => $file_info['file_mime'],
 			'userid' => view::User('id'),
 			'filesize' => $file_info['file_size'],
@@ -188,7 +188,7 @@ class Reference
 	{
 		$sql = "SELECT att.*,ref.attid,ref.id as refid FROM {$this->table->attachments} att 
 				LEFT JOIN {$this->table->reference} ref ON att.id=ref.attid
-				WHERE att.filetype='reference'";
+				WHERE att.filetype='literature'";
 		$rs = $this->db->query($sql);
 		$rows = $rs->fetchAll();
 		return $rows;