diff --git a/inc/inc.ClassDownloadMgr.php b/inc/inc.ClassDownloadMgr.php
index 45b5f9edb..97b5020c3 100644
--- a/inc/inc.ClassDownloadMgr.php
+++ b/inc/inc.ClassDownloadMgr.php
@@ -45,6 +45,18 @@ class SeedDMS_Download_Mgr {
 	 */
 	protected $extracols;
 
+	/**
+	 * @var array $header list of entries in header (first line)
+	 * @access protected
+	 */
+	protected $header;
+
+	/**
+	 * @var array $extraheader list of extra entries in header
+	 * @access protected
+	 */
+	protected $extraheader;
+
 	/**
 	 * @var array $rawcontents list of content used instead of document content
 	 * @access protected
@@ -55,7 +67,7 @@ class SeedDMS_Download_Mgr {
 	 * @var array $filenames filename used in archive
 	 * @access protected
 	 */
-	protected $filnames;
+	protected $filenames;
 
 	function __construct($tmpdir = '') {
 		$this->tmpdir = $tmpdir;
@@ -64,6 +76,7 @@ class SeedDMS_Download_Mgr {
 		$this->extracols = array();
 		$this->rawcontents = array();
 		$this->extraheader = array();
+		$this->filenames = array();
 	}
 
 	public function addHeader($extraheader) { /* {{{ */