diff --git a/inc/databap.php b/inc/databap.php
index acd3c46..8b6aad0 100755
--- a/inc/databap.php
+++ b/inc/databap.php
@@ -20,7 +20,7 @@ class Databap extends PhpObject
 	const HISTORY_LENGTH = 10;
 	const STYLE_PATH = 'style/databap.css';
 	public static $UPLOAD_IMG_EXTS = array('jpg', 'jpeg', 'gif', 'png');
-	public static $UPLOAD_DOC_EXTS = array('jpg', 'jpeg', 'gif', 'png', 'doc', 'ppt', 'pdf', 'xls', 'docx', 'pptx', 'xlsx');
+	public static $UPLOAD_DOC_EXTS = array('jpg', 'jpeg', 'gif', 'png', 'doc', 'ppt', 'pdf', 'xls', 'docx', 'pptx', 'xlsx', 'zip');
 	const ID_SEPARATOR = '_';
 	const SYSTEM_USER_ID = 1;