diff --git a/nextcloud.conf.example b/nextcloud.conf.example
index b87503a..4b708d1 100644
--- a/nextcloud.conf.example
+++ b/nextcloud.conf.example
@@ -9,6 +9,8 @@
 # admin user name
 NEXTCLOUD_ADMIN_USER=admin
 
+# comma seperated list of trusted domains
+NEXTCLOUD_TRUSTED_DOMAINS="betacloud.pgollor.de"
 
 ## Timezone one of /usr/share/zoneinfo
 TZ=Europe/Berlin