diff --git a/system/src/Grav/Common/Page/Pages.php b/system/src/Grav/Common/Page/Pages.php
index 3d9762684a..a7657dff1a 100644
--- a/system/src/Grav/Common/Page/Pages.php
+++ b/system/src/Grav/Common/Page/Pages.php
@@ -1259,7 +1259,7 @@ protected function buildSort($path, array $pages, $order_by = 'default', $manual
                 if ($col) {
                     if (($sort_flags & SORT_NATURAL) === SORT_NATURAL) {
                         $list = preg_replace_callback('~([0-9]+)\.~', function($number) {
-                            return sprintf('%032d', $number);
+                            return sprintf('%032d', $number[0]);
                         }, $list);
                     }