diff --git a/classes/Profile_block.php b/classes/Profile_block.php
index 1bc63c0d14..47f763386a 100644
--- a/classes/Profile_block.php
+++ b/classes/Profile_block.php
@@ -1,8 +1,29 @@
 <?php
+/*
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+if (!defined('LACONICA')) { exit(1); }
+
 /**
  * Table Definition for profile_block
  */
-require_once 'classes/Memcached_DataObject';
+
+require_once INSTALLDIR.'/classes/Memcached_DataObject.php';
 
 class Profile_block extends Memcached_DataObject
 {