diff --git a/system/libraries/Email.php b/system/libraries/Email.php
index 8f2ca62..d81fd44 100644
--- a/system/libraries/Email.php
+++ b/system/libraries/Email.php
@@ -418,7 +418,7 @@
 	 * @param	string
 	 * @return	void
 	 */
-	public function attach($filename, $newname=NULL, $disposition = 'attachment')
+	public function attach($filename, $disposition = 'attachment', $newname=NULL)
 	{
 		$this->_attach_name[] = array($filename, $newname);
 		$this->_attach_type[] = $this->_mime_types(pathinfo($filename, PATHINFO_EXTENSION));