diff --git a/fet2020/documents/etherpadlib.py b/fet2020/documents/etherpadlib.py
index 7d772616..deaf4b22 100644
--- a/fet2020/documents/etherpadlib.py
+++ b/fet2020/documents/etherpadlib.py
@@ -1,3 +1,5 @@
+from django.conf import settings
+
 from datetime import datetime, timedelta
 
 from .api import get_ep_client
@@ -33,7 +35,7 @@ def add_ep_cookie(request, response):
 
     if ep_sessid:
         response.set_cookie(
-            "sessionID", ep_sessid, expires=expires, domain=".2020.fet.at", path="/"
+            "sessionID", ep_sessid, expires=expires, domain=settings.HOST_NAME, path="/"
         )
         response.set_cookie("sessionID", ep_sessid, expires=expires, path="/etherpad")
     return response
@@ -47,5 +49,5 @@ def del_ep_cookie(request, response):
         epc, group = get_ep_client()
         epc.deleteSession(sessionID=ep_sessionID)
 
-        response.delete_cookie("sessionID", domain=".2020.fet.at", path="/")
+        response.delete_cookie("sessionID", domain=settings.HOST_NAME, path="/")
     return response