diff --git a/files/open_file.php b/files/open_file.php
index e1b82dcd37..b91f72aaf3 100644
--- a/files/open_file.php
+++ b/files/open_file.php
@@ -30,6 +30,7 @@ if(strstr($file,'..') or strstr($dir,'..')){
     die();
 }
 $filename=$dir.'/'.$file;
+$filename=stripslashes($filename);
 $ftype=OC_FILESYSTEM::getMimeType($filename);
 ob_end_clean();
 header('Content-Type: '.$ftype);