diff --git a/inc/config.php b/inc/config.php
index 9e8fdb59..61379574 100644
--- a/inc/config.php
+++ b/inc/config.php
@@ -496,7 +496,7 @@
 	// Maximum post body length.
 	$config['max_body'] = 1800;
 	// Maximum number of lines allowed in a post.
-	$config['max_lines'] = 100;
+	$config['maximum_lines'] = 100;
 	// Maximum number of post body lines to show on the index page.
 	$config['body_truncate'] = 15;
 	// Maximum number of characters to show on the index page.
diff --git a/post.php b/post.php
index c0898cdd..cfea1207 100644
--- a/post.php
+++ b/post.php
@@ -730,7 +730,7 @@ if (isset($_POST['delete'])) {
 			error(sprintf($config['error']['toolong'], 'subject'));
 		if (!$mod && mb_strlen($post['body']) > $config['max_body'])
 			error($config['error']['toolong_body']);
-		if (!$mod && substr_count($post['body'], "\n") >= $config['max_lines'])
+		if (!$mod && substr_count($post['body'], "\n") >= $config['maximum_lines'])
 			error($config['error']['toomanylines']);
 		if (mb_strlen($post['password']) > 20)
 			error(sprintf($config['error']['toolong'], 'password'));