From 665974a21e0917e62ff84e57df6cc938ff5599f0 Mon Sep 17 00:00:00 2001
From: Flavio Copes <copesc@gmail.com>
Date: Fri, 28 Aug 2015 15:55:17 +0200
Subject: [PATCH] Prevent error, check if $child_page is not null

---
 system/src/Grav/Common/Page/Page.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/system/src/Grav/Common/Page/Page.php b/system/src/Grav/Common/Page/Page.php
index 4e88ce5a0..ed961594e 100644
--- a/system/src/Grav/Common/Page/Page.php
+++ b/system/src/Grav/Common/Page/Page.php
@@ -1737,7 +1737,7 @@ class Page
 
         if (isset($routes[$uri_path])) {
             $child_page = $pages->dispatch($uri->route())->parent();
-            while (!$child_page->root()) {
+            if ($child_page) while (!$child_page->root()) {
                 if ($this->path() == $child_page->path()) {
                     return true;
                 }