diff --git a/lib/Util.php b/lib/Util.php
index ed617634..3ba19b2a 100644
--- a/lib/Util.php
+++ b/lib/Util.php
@@ -299,7 +299,7 @@ class Util
      */
     public static function sanitizePath(string $path)
     {
-        $path = mb_ereg_replace('([^\\w\\s\\d\\-_~,;:!@#$&*{}\[\]\'\\[\\]\\(\\).\\\/])', '', $path);
+        $path = str_replace("\0", '', $path); // remove null characters
 
         return mb_ereg_replace('\/\/+', '/', $path); // remove extra slashes
     }