diff --git a/src/lib/README.txt b/src/lib/README.txt
deleted file mode 100644
index 44fee756c..000000000
--- a/src/lib/README.txt
+++ /dev/null
@@ -1 +0,0 @@
-jquery.form will be in ../3rdparty/ once we don't have the submodule anymore
diff --git a/src/pat/calendar/index.html b/src/pat/calendar/index.html
index b6fc983a1..df75b9811 100644
--- a/src/pat/calendar/index.html
+++ b/src/pat/calendar/index.html
@@ -117,6 +117,7 @@
                 </p>
             </article>
     </div>
+    </div>
 
     <style>
         .calendar-hidden {
diff --git a/src/pat/calendar/test_add_event.html b/src/pat/calendar/test_add_event.html
index 20ff8bd69..838d24dac 100644
--- a/src/pat/calendar/test_add_event.html
+++ b/src/pat/calendar/test_add_event.html
@@ -163,6 +163,8 @@ <h1>Create event</h1>
               </select>
             </label>
           </fieldset>
+      </fieldset>
+      </fieldset>
 
       <fieldset class="button-bar">
         <button
diff --git a/src/pat/date-picker/date-picker.test.js b/src/pat/date-picker/date-picker.test.js
index ada0b8070..bed07acf7 100644
--- a/src/pat/date-picker/date-picker.test.js
+++ b/src/pat/date-picker/date-picker.test.js
@@ -1,7 +1,6 @@
 import $ from "jquery";
 import events from "../../core/events";
-import { storage } from "./date-picker";
-import pattern from "./date-picker";
+import pattern, { storage } from "./date-picker";
 import pattern_auto_submit from "../auto-submit/auto-submit";
 import utils from "../../core/utils";
 import { jest } from "@jest/globals";
diff --git a/src/pat/expandable-tree/index.html b/src/pat/expandable-tree/index.html
index 279120ade..b521a36e4 100644
--- a/src/pat/expandable-tree/index.html
+++ b/src/pat/expandable-tree/index.html
@@ -48,7 +48,6 @@
                           </li>
                           <li class="document"><a href="#">Document 4.1.2</a></li>
                       </ul>
-                  </li>
             </li>
             <li class="folder">Folder 5</li>
         </ul>
diff --git a/src/pat/scroll/test-scrollbody.html b/src/pat/scroll/test-scrollbody.html
index ca70e95f6..eb2a64e1e 100644
--- a/src/pat/scroll/test-scrollbody.html
+++ b/src/pat/scroll/test-scrollbody.html
@@ -1,5 +1,6 @@
 <!DOCTYPE html>
 <html>
+<head>
     <title>label_longziekten-algemeen</title>
     <meta charset="utf-8">
     <script src="/bundle.min.js"></script>
@@ -29,4 +30,3 @@ <h1>Longziekten algemeen</h1>
 
 </body>
 </html>
-
