diff --git a/tools/maintenance.php b/tools/maintenance.php
index abf53361..734d2d45 100644
--- a/tools/maintenance.php
+++ b/tools/maintenance.php
@@ -6,53 +6,53 @@
 require dirname(__FILE__) . '/inc/cli.php';
 
 function get_reports_by_board(): array {
-    $query = prepare("SELECT `board`, `post`, `id` FROM ``reports``");
-    $query->execute() or error(db_error($query));
-    return $query->fetchAll(PDO::FETCH_GROUP | PDO::FETCH_NUM);
+	$query = prepare("SELECT `board`, `post`, `id` FROM ``reports``");
+	$query->execute() or error(db_error($query));
+	return $query->fetchAll(PDO::FETCH_GROUP | PDO::FETCH_NUM);
 }
 
 function post_ids_by_board(array $reports): array {
-    $ret = [];
-    foreach ($reports as $board => $values) {
-        foreach ($values as $value) {
-            $ret[$board] ??= [];
-            $ret[$board][] = $value[0];
-        }
-    }
-    return $ret;
+	$ret = [];
+	foreach ($reports as $board => $values) {
+		foreach ($values as $value) {
+			$ret[$board] ??= [];
+			$ret[$board][] = $value[0];
+		}
+	}
+	return $ret;
 }
 
 function filter_invalid_reports(array $board_post_ids, array $reports): array {
-    $invalid_reports = [];
+	$invalid_reports = [];
 
-    foreach ($board_post_ids as $board => $post_ids) {
-        $query = query(sprintf('SELECT `id` FROM ``posts_%s`` WHERE `id` = ' . implode(' OR `id` = ', $post_ids), $board));
-        $existing_posts = $query->fetchAll(PDO::FETCH_COLUMN);
+	foreach ($board_post_ids as $board => $post_ids) {
+		$query = query(sprintf('SELECT `id` FROM ``posts_%s`` WHERE `id` = ' . implode(' OR `id` = ', $post_ids), $board));
+		$existing_posts = $query->fetchAll(PDO::FETCH_COLUMN);
 
-        foreach ($reports[$board] as $values) {
-            list($post_id, $report_id) = $values;
-            if (!in_array($post_id, $existing_posts)) {
-                $invalid_reports[] = $report_id;
-            }
-        }
-    }
+		foreach ($reports[$board] as $values) {
+			list($post_id, $report_id) = $values;
+			if (!in_array($post_id, $existing_posts)) {
+				$invalid_reports[] = $report_id;
+			}
+		}
+	}
 
-    return $invalid_reports;
+	return $invalid_reports;
 }
 
 function get_report_ids(array $reports): array {
-    $ret = [];
-    foreach ($reports as $_board => $values) {
-        foreach ($values as $value) {
-            $report_id = $value[0];
-            $ret[] = $report_id;
-        }
-    }
-    return $ret;
+	$ret = [];
+	foreach ($reports as $_board => $values) {
+		foreach ($values as $value) {
+			$report_id = $value[0];
+			$ret[] = $report_id;
+		}
+	}
+	return $ret;
 }
 
 function delete_reports(array $report_ids): int {
-    return query('DELETE FROM ``reports`` WHERE `id` = ' . implode(' OR `id` = ', $report_ids))->rowCount();
+	return query('DELETE FROM ``reports`` WHERE `id` = ' . implode(' OR `id` = ', $report_ids))->rowCount();
 }
 
 echo "Clearing expired bans...\n";
@@ -78,9 +78,9 @@ $report_ids = get_report_ids($reports);
 $board_post_ids = post_ids_by_board($reports);
 $invalid_reports = filter_invalid_reports($board_post_ids, $reports);
 if (!empty($invalid_reports)) {
-    $deleted_count = delete_reports($invalid_reports);
+	$deleted_count = delete_reports($invalid_reports);
 } else {
-    $deleted_count = 0;
+	$deleted_count = 0;
 }
 $delta = microtime(true) - $start;
 echo "Deleted $deleted_count invalid reports in $delta seconds!\n";