diff --git a/templates/themes/sitemap/theme.php b/templates/themes/sitemap/theme.php
index 1cebcdb6..41a7f304 100644
--- a/templates/themes/sitemap/theme.php
+++ b/templates/themes/sitemap/theme.php
@@ -26,7 +26,7 @@
 		$threads = array();
 		
 		foreach ($boards as $board) {
-			$query = query(sprintf("SELECT `id`, `slug`, (SELECT `time` FROM ``posts_%s`` WHERE `thread` = `thread_id` OR `id` = `thread_id` ORDER BY `time` DESC LIMIT 1) AS `lastmod` FROM ``posts_%s`` WHERE `thread` IS NULL", $board, $board)) or error(db_error());
+			$query = query(sprintf("SELECT `id`, `id` AS `thread_id`, `slug`, (SELECT `time` FROM ``posts_%s`` WHERE `thread` = `thread_id` OR `id` = `thread_id` ORDER BY `time` DESC LIMIT 1) AS `lastmod` FROM ``posts_%s`` WHERE `thread` IS NULL", $board, $board)) or error(db_error());
 			$threads[$board] = $query->fetchAll(PDO::FETCH_ASSOC);
 		}