X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/5034f21394e5dc52965094d885fdb75106836c19..bc1302a8d8c9c7facb16b28e1cf1da4409e7ede0:/app/Http/Controllers/BookController.php

diff --git a/app/Http/Controllers/BookController.php b/app/Http/Controllers/BookController.php
index b6175d859..2d961355b 100644
--- a/app/Http/Controllers/BookController.php
+++ b/app/Http/Controllers/BookController.php
@@ -185,7 +185,7 @@ class BookController extends Controller
         $this->checkOwnablePermission('book-update', $book);
 
         // Return if no map sent
-        if (!$request->has('sort-tree')) {
+        if (!$request->filled('sort-tree')) {
             return redirect($book->getUrl());
         }