diff --git a/CHANGELOG.md b/CHANGELOG.md
index 394e675..c35bd82 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # QOwnNotesAPI Change Log
 
+## 23.6.0
+- re-did the application structure for Nextcloud 27 (for [#43](https://github.com/pbek/qownnotesapi/issues/43))
+
 ## 23.3.0
 - enabled and tested app for Nextcloud 26 (for [#42](https://github.com/pbek/qownnotesapi/issues/42))
 
diff --git a/appinfo/app.php b/appinfo/app.php
deleted file mode 100644
index f3413d0..0000000
--- a/appinfo/app.php
+++ /dev/null
@@ -1,14 +0,0 @@
-<?php
-
-declare(strict_types=1);
-/**
- * Nextcloud / ownCloud - QOwnNotesAPI.
- *
- * This file is licensed under the Affero General Public License version 3 or
- * later. See the COPYING file.
- *
- * @author Patrizio Bekerle <patrizio@bekerle.com>
- * @copyright Patrizio Bekerle 2015-2020
- */
-
-namespace OCA\QOwnNotesAPI\AppInfo;
diff --git a/appinfo/application.php b/appinfo/application.php
deleted file mode 100644
index 0faf0bd..0000000
--- a/appinfo/application.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-declare(strict_types=1);
-/**
- * Nextcloud / ownCloud - QOwnNotesAPI.
- *
- * This file is licensed under the Affero General Public License version 3 or
- * later. See the COPYING file.
- *
- * @author Patrizio Bekerle <patrizio@bekerle.com>
- * @copyright Patrizio Bekerle 2015-2020
- */
-
-namespace OCA\QOwnNotesAPI\AppInfo;
-
-use OCP\AppFramework\App;
-
-class Application extends App
-{
-    public function __construct(array $urlParams = [])
-    {
-        parent::__construct('qownnotesapi', $urlParams);
-    }
-}
diff --git a/controller/noteapicontroller.php b/lib/Controller/NoteApiController.php
similarity index 99%
rename from controller/noteapicontroller.php
rename to lib/Controller/NoteApiController.php
index b64bfd1..14ff9f3 100644
--- a/controller/noteapicontroller.php
+++ b/lib/Controller/NoteApiController.php
@@ -64,7 +64,7 @@ public function getAllVersions()
             $versionsResults = [];
 
             if (is_array($versions) && (count($versions) > 0)) {
-                require_once __DIR__.'/../3rdparty/finediff/finediff.php';
+                require_once __DIR__.'/../../3rdparty/finediff/finediff.php';
 
                 $users_view = new View('/'.$uid);
                 $currentData = $users_view->file_get_contents('files/'.$filename);