diff --git a/action.php b/action.php
index a80e8a2..9aab30a 100644
--- a/action.php
+++ b/action.php
@@ -1,8 +1,15 @@
 <?php
 /**
- * Action part of the pagemove plugin
+ * Plugin : Pagemove
  *
- * @author Michael Hamann <michael@content-space.de>
+ * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
+ * @author     Michael Hamann <michael@content-space.de>
+ */
+// must be run within Dokuwiki
+if (!defined('DOKU_INC')) die();
+
+/**
+ * Action part of the pagemove plugin
  */
 class action_plugin_pagemove extends DokuWiki_Action_Plugin {
     /**
diff --git a/helper.php b/helper.php
index fa85983..56bd22d 100644
--- a/helper.php
+++ b/helper.php
@@ -1,8 +1,15 @@
 <?php
 /**
- * Helper part of the pagemove plugins.
+ * Plugin : Pagemove
  *
- * @author Michael Hamann <michael@content-space.de>
+ * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
+ * @author     Michael Hamann <michael@content-space.de>
+ */
+// must be run within Dokuwiki
+if (!defined('DOKU_INC')) die();
+
+/**
+ * Helper part of the pagemove plugin.
  */
 class helper_plugin_pagemove extends DokuWiki_Plugin {
     /**