diff --git a/plugins/dynamix/include/PortFree.php b/plugins/dynamix/include/PortFree.php
deleted file mode 100644
index 90f5d6ac4..000000000
--- a/plugins/dynamix/include/PortFree.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?PHP
-/* Copyright 2005-2017, Lime Technology
- * Copyright 2012-2017, Bergware International.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version 2,
- * as published by the Free Software Foundation.
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- */
-?>
-<?
-$tcp = explode(',',$_POST['port']);
-if (count($tcp)==1 && !$tcp[0]) $tcp[0] = 80;
-foreach($tcp as $port) {
-  if (!$port) continue;
-  $pid = exec("lsof -Pni4 -sTCP:LISTEN|awk '/:$port /{print \$1;exit}'");
-  if ($pid && $pid != 'nginx') {echo "$port,$pid"; break;}
-}