diff --git a/system/application/config/mimes.php b/system/application/config/mimes.php
index 225b0a5..a8addb9 100644
--- a/system/application/config/mimes.php
+++ b/system/application/config/mimes.php
@@ -30,7 +30,7 @@
 				'smil'	=>	'application/smil',
 				'mif'	=>	'application/vnd.mif',
 				'xls'	=>	array('application/excel', 'application/vnd.ms-excel'),
-				'ppt'	=>	'application/powerpoint',
+				'ppt'	=>	array('application/powerpoint', 'application/vnd.ms-powerpoint'),
 				'wbxml'	=>	'application/wbxml',
 				'wmlc'	=>	'application/wmlc',
 				'dcr'	=>	'application/x-director',