diff --git a/library/config.php b/library/config.php
index 13b0b2f3..9249e302 100644
--- a/library/config.php
+++ b/library/config.php
@@ -96,7 +96,8 @@ $bb_cfg['verify_reported_ip'] = true;              // Verify IP reported by clie
 $bb_cfg['allow_internal_ip']  = false;             // Allow internal IP (10.xx.. etc.)
 $bb_cfg['client_ban'] = array(
 	'enabled' => false,
-	// Clients to be blocked, for example, peer id '-UT' will block all uTorrent clients, '-UT2' will block builds starting with 2 (default: false)
+	'only_allow_mode' => false,
+	// Clients to be blocked / allowed (in "only allow mode"), for example, peer id '-UT' will block all uTorrent clients, '-UT2' will block builds starting with 2 (default: false)
 	// The second argument is being shown in the torrent client as a failure message
 	// Handy client list: https://github.com/transmission/transmission/blob/f85c3b6f8db95d5363f6ec38eee603f146c6adb6/libtransmission/clients.cc#L504
 	'clients' => array(