diff --git a/Kalender.md b/Kalender.md
index 43761bd0b34ebfeb1fdc0d0b9ea1c328ee542c77..cc38f8550e15ec631a165901e120644e6ca197c5 100644
--- a/Kalender.md
+++ b/Kalender.md
@@ -1 +1 @@
-<iframe width="1200" height="645" src="https://owncloud.gwdg.de/index.php/apps/calendar/embed/STOKKIJXSK1CWED5"></iframe>
\ No newline at end of file
+<iframe width="1200" height="645" src="https://owncloud-test.gwdg.de/index.php/apps/calendar/embed/STOKKIJXSK1CWED5"></iframe>
\ No newline at end of file