diff --git a/lib/mimetypes.list.php b/lib/mimetypes.list.php
index 37d50756d57..8386bcb93f3 100644
--- a/lib/mimetypes.list.php
+++ b/lib/mimetypes.list.php
@@ -93,4 +93,5 @@ return array(
 	'pptx'=>'application/mspowerpoint',
 	'sgf' => 'application/sgf',
 	'cdr' => 'application/coreldraw',
+	'impress' => 'text/impress',
 );