diff --git a/lib/private/helper.php b/lib/private/helper.php
index 1c8d01c141..90ef704c3c 100644
--- a/lib/private/helper.php
+++ b/lib/private/helper.php
@@ -161,6 +161,7 @@ class OC_Helper {
 			'application/vnd.oasis.opendocument.text-template' => 'x-office/document',
 			'application/vnd.oasis.opendocument.text-web' => 'x-office/document',
 			'application/vnd.oasis.opendocument.text-master' => 'x-office/document',
+			'application/mspowerpoint' => 'x-office/presentation',
 			'application/vnd.ms-powerpoint' => 'x-office/presentation',
 			'application/vnd.openxmlformats-officedocument.presentationml.presentation' => 'x-office/presentation',
 			'application/vnd.openxmlformats-officedocument.presentationml.template' => 'x-office/presentation',
@@ -171,6 +172,7 @@ class OC_Helper {
 			'application/vnd.ms-powerpoint.slideshow.macroEnabled.12' => 'x-office/presentation',
 			'application/vnd.oasis.opendocument.presentation' => 'x-office/presentation',
 			'application/vnd.oasis.opendocument.presentation-template' => 'x-office/presentation',
+			'application/msexcel' => 'x-office/spreadsheet',
 			'application/vnd.ms-excel' => 'x-office/spreadsheet',
 			'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' => 'x-office/spreadsheet',
 			'application/vnd.openxmlformats-officedocument.spreadsheetml.template' => 'x-office/spreadsheet',
diff --git a/lib/private/mimetypes.list.php b/lib/private/mimetypes.list.php
index 9db396e9fd..1ad333b508 100644
--- a/lib/private/mimetypes.list.php
+++ b/lib/private/mimetypes.list.php
@@ -36,6 +36,8 @@ return array(
 	'c++' => 'text/x-c++src',
 	'doc'=>'application/msword',
 	'docx'=>'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+	'dot'=>'application/msword',
+	'dotx'=>'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
 	'dv'=>'video/dv',
 	'epub' => 'application/epub+zip',
 	'exe'=>'application/x-ms-dos-executable',