diff --git a/emhttp/plugins/dynamix.plugin.manager/post-hooks/post_plugin_checks b/emhttp/plugins/dynamix.plugin.manager/post-hooks/post_plugin_checks
index fd81e85ac..325af7e33 100755
--- a/emhttp/plugins/dynamix.plugin.manager/post-hooks/post_plugin_checks
+++ b/emhttp/plugins/dynamix.plugin.manager/post-hooks/post_plugin_checks
@@ -12,7 +12,7 @@
  */
 ?>
 <?
-$docroot = $docroot ?? $_SERVER['DOCUMENT_ROOT'] ?: "/usr/local/emhttp";
+$docroot ??= ($_SERVER['DOCUMENT_ROOT'] ?: '/usr/local/emhttp');
 require_once "$docroot/plugins/dynamix.plugin.manager/include/PluginHelpers.php";
 
 function readJson($file) {