diff --git a/apps/files_versions/download.php b/apps/files_versions/download.php
index 72018ca68b951171314072be2b9a32052badba1b..3cc324c2306ac15f92e954c5a2457d933672fd5f 100644
--- a/apps/files_versions/download.php
+++ b/apps/files_versions/download.php
@@ -34,7 +34,7 @@ $versionName = '/'.$uid.'/files_versions/'.$filename.'.v'.$revision;
 
 $view = new OC\Files\View('/');
 
-$ftype = $view->getMimeType('/'.$uid.'/files/'.$filename);
+$ftype = \OC_Helper::getSecureMimeType($view->getMimeType('/'.$uid.'/files/'.$filename));
 
 header('Content-Type:'.$ftype);
 OCP\Response::setContentDispositionHeader(basename($filename), 'attachment');