diff --git a/roles/mail/templates/mailman/mailman-web.py.j2 b/roles/mail/templates/mailman/mailman-web.py.j2
index bcb0c5f..143cdb2 100644
--- a/roles/mail/templates/mailman/mailman-web.py.j2
+++ b/roles/mail/templates/mailman/mailman-web.py.j2
@@ -190,3 +190,6 @@ SOCIALACCOUNT_PROVIDERS = {
 COMPRESS_OFFLINE = True
 
 POSTORIUS_TEMPLATE_BASE_URL = 'http://localhost/mailman3/'
+
+# This is a quick and dirty hack - maybe there is a way to reliably retrieve the right ID?
+SITE_ID = 2