diff --git a/admin/include/themes.class.php b/admin/include/themes.class.php
index 6d55e11bd..d38352dfa 100644
--- a/admin/include/themes.class.php
+++ b/admin/include/themes.class.php
@@ -242,6 +242,7 @@ DELETE
 
         $theme_maintain->delete();
 
+        include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
         deltree(PHPWG_THEMES_PATH.$theme_id, PHPWG_THEMES_PATH . 'trash');
         break;