diff --git a/inc/config.php b/inc/config.php
index b32f4266..98e127b3 100644
--- a/inc/config.php
+++ b/inc/config.php
@@ -879,8 +879,10 @@
 	
 	// Check public ban message by default
 	$config['mod']['check_ban_message'] = false;
-	// Default public ban message
+	// Default public ban message.
+	// In public ban messages, %length% is replaced with "for x days" or "permanently" (with %LENGTH% being the uppercase equivalent).
 	$config['mod']['default_ban_message'] = 'USER WAS BANNED FOR THIS POST';
+	// $config['mod']['default_ban_message'] = 'USER WAS BANNED %LENGTH% FOR THIS POST'; // Include length in ban message
 	// What to append to the post for public bans ("%s" is the message)
 	$config['mod']['ban_message'] = '<span class="public_ban">(%s)</span>';
 	
diff --git a/inc/mod/pages.php b/inc/mod/pages.php
index 1ed9a94b..01794d2e 100644
--- a/inc/mod/pages.php
+++ b/inc/mod/pages.php
@@ -1152,6 +1152,9 @@ function mod_ban_post($board, $delete, $post, $token = false) {
 		
 		if (isset($_POST['public_message'], $_POST['message'])) {
 			// public ban message
+			$length_english = parse_time($_POST['length']) ? 'for ' . until(parse_time($_POST['length'])) : 'permanently';
+			$_POST['message'] = str_replace('%length%', $length_english, $_POST['message']);
+			$_POST['message'] = str_replace('%LENGTH%', strtoupper($length_english), $_POST['message']);
 			$query = prepare(sprintf('UPDATE `posts_%s` SET `body` = CONCAT(`body`, :body) WHERE `id` = :id', $board));
 			$query->bindValue(':id', $post);
 			$query->bindValue(':body', sprintf($config['mod']['ban_message'], utf8tohtml($_POST['message'])));