diff --git a/themes/educenter-hugo/layouts/vplan/single.html b/themes/educenter-hugo/layouts/vplan/single.html
index 1f7ba45a..ec476f2a 100644
--- a/themes/educenter-hugo/layouts/vplan/single.html
+++ b/themes/educenter-hugo/layouts/vplan/single.html
@@ -6,7 +6,7 @@
       <div class="col-12">
         <div class="content">
           {{ .Content }}
-          <embed src="http://www.stundenplan24.de/20072021/mobil" style="width:100%; height:720px;">
+          <object type="text/html" width="100%" height="720" data="http://www.stundenplan24.de/20072021/mobil/">
         </div>
       </div>
     </div>