diff --git a/library/config.php b/library/config.php
index a0f2f79c..947b4abc 100644
--- a/library/config.php
+++ b/library/config.php
@@ -578,3 +578,5 @@ $bb_cfg['nofollow'] = array(
 	'disabled'    => false,
 	'allowed_url' => array($domain_name),             // 'allowed.site', 'www.allowed.site'
 );
+
+define('BB_CFG_LOADED', true);
diff --git a/library/includes/init_bb.php b/library/includes/init_bb.php
index be4a2bff..220ef3de 100644
--- a/library/includes/init_bb.php
+++ b/library/includes/init_bb.php
@@ -2,6 +2,7 @@
 
 if (!defined('BB_ROOT')) die(basename(__FILE__));
 if (!(PHP_VERSION_ID >= 50303)) die('TorrentPier II requires PHP version 5.3.3+. Your PHP version '. PHP_VERSION);
+if (!defined('BB_CFG_LOADED')) trigger_error('File config.php not loaded', E_USER_ERROR);
 
 // Define some basic configuration arrays
 unset($stopwords, $synonyms_match, $synonyms_replace);