diff --git a/deployments/examples/cs3_users_ocis/docker-compose.yml b/deployments/examples/cs3_users_ocis/docker-compose.yml
index a7b00743ed..44f01a642f 100644
--- a/deployments/examples/cs3_users_ocis/docker-compose.yml
+++ b/deployments/examples/cs3_users_ocis/docker-compose.yml
@@ -79,6 +79,7 @@ services:
       PROXY_CONFIG_FILE: "/var/tmp/ocis/.config/proxy-config.json"
       # General oCIS config
       OCIS_URL: https://${OCIS_DOMAIN:-ocis.owncloud.test}
+      OCIS_DOMAIN: ${OCIS_DOMAIN:-ocis.owncloud.test}
       OCIS_LOG_LEVEL: ${OCIS_LOG_LEVEL:-error} # make oCIS less verbose
       PROXY_OIDC_INSECURE: "${INSECURE:-false}" # needed if Traefik is using self generated certificates
       PROXY_TLS: "false" # do not use SSL between Traefik and oCIS