diff --git a/library/config.php b/library/config.php
index c0d2eac6..13b0b2f3 100644
--- a/library/config.php
+++ b/library/config.php
@@ -100,8 +100,10 @@ $bb_cfg['client_ban'] = array(
 	// 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(
+		// 'client_id' => 'Ban reason (can be empty)'
 		'-UT' => 'uTorrent — NOT ad-free and open-source',
 		'-MG' => 'Mostly leeching client',
+		'-ZO' => '',
 	)
 );