diff --git a/inc/plugincontroller.class.php b/inc/plugincontroller.class.php
index 0b4041a77e28f3990d2f45e9de387423f1f013bc..c825870cd142625481280ce397be4a4d819319de 100644
--- a/inc/plugincontroller.class.php
+++ b/inc/plugincontroller.class.php
@@ -129,6 +129,8 @@ class Doku_Plugin_Controller {
     }
 
     protected function _populateMasterList() {
+        global $conf;
+
         if ($dh = @opendir(DOKU_PLUGIN)) {
             $all_plugins = array();
             while (false !== ($plugin = readdir($dh))) {