diff --git a/lib/private/helper.php b/lib/private/helper.php
index 90ef704c3c..58bee9c630 100644
--- a/lib/private/helper.php
+++ b/lib/private/helper.php
@@ -182,6 +182,7 @@ class OC_Helper {
 			'application/vnd.ms-excel.sheet.binary.macroEnabled.12' => 'x-office/spreadsheet',
 			'application/vnd.oasis.opendocument.spreadsheet' => 'x-office/spreadsheet',
 			'application/vnd.oasis.opendocument.spreadsheet-template' => 'x-office/spreadsheet',
+			'application/msaccess' => 'database',
 		);
 
 		if (isset($alias[$mimetype])) {
diff --git a/lib/private/mimetypes.list.php b/lib/private/mimetypes.list.php
index 1ad333b508..40fb1d2d97 100644
--- a/lib/private/mimetypes.list.php
+++ b/lib/private/mimetypes.list.php
@@ -24,6 +24,7 @@
  * Array mapping file extensions to mimetypes (in alphabetical order).
  */
 return array(
+	'accdb'=>'application/msaccess',
 	'ai' => 'application/illustrator',
 	'avi'=>'video/x-msvideo',
 	'bash' => 'text/x-shellscript',
@@ -60,6 +61,7 @@ return array(
 	'markdown' => 'text/markdown',
 	'mdown' => 'text/markdown',
 	'md' => 'text/markdown',
+	'mdb'=>'application/msaccess',
 	'mdwn' => 'text/markdown',
 	'mobi' => 'application/x-mobipocket-ebook',
 	'mov'=>'video/quicktime',