diff --git a/content/static/datenspuren/2020/index.html b/content/static/datenspuren/2020/index.html
index 3533a4e97..0dd9f9711 100644
--- a/content/static/datenspuren/2020/index.html
+++ b/content/static/datenspuren/2020/index.html
@@ -174,8 +174,10 @@
         <nav class="nav flex-column" aria-orientation="vertical">
           <a class="nav-link" href="https://datenspuren.de/2020/fahrplan/">Fahrplan</a>
           <a class="nav-link" href="https://streaming.media.ccc.de/datenspuren20/">Streams</a>
+          <a class="nav-link" href="https://codimd.c3d2.de/ds20-himmelhilf">Event Wiki</a>
+          <a class="nav-link" href="https://zengelsystem.c3d2.space">Mithelfen</a>
           <a class="nav-link" href="https://chat.live.datenspuren.de">Mattermost</a>
-          <a class="nav-link" href=" https://play.workadventure.live.datenspuren.de/_/global/raw.githubusercontent.com/c3d2/ds2020workadventuretest/master/zw-map/maps/outside.json">Workadventure</a>
+          <a class="nav-link" href="https://play.workadventure.live.datenspuren.de/_/global/raw.githubusercontent.com/c3d2/ds2020workadventuretest/master/zw-map/maps/outside.json">Workadventure</a>
           <a class="nav-link" href="https://www.stickermag.com/poster/datenspuren-tshirt.html">T-Shirt Vorbestellung</a>
           <a class="nav-link" href="https://github.com/c3d2/C3-PR" role="tab">Präsenz Roboter Basteln</a>
           <a class="nav-link" href="javascript:alert('Die Steuerung der Roboter befindet sich im Wartungsmodus!')">Präsenz Roboter Steuern</a>