diff --git a/deployments/examples/ocis_wopi/docker-compose.yml b/deployments/examples/ocis_wopi/docker-compose.yml
index a20b3bf0dbc..7359324ed3e 100644
--- a/deployments/examples/ocis_wopi/docker-compose.yml
+++ b/deployments/examples/ocis_wopi/docker-compose.yml
@@ -18,7 +18,7 @@ services:
       - "--certificatesResolvers.http.acme.email=${TRAEFIK_ACME_MAIL:-example@example.org}"
       - "--certificatesResolvers.http.acme.storage=/certs/acme.json"
       - "--certificatesResolvers.http.acme.httpChallenge.entryPoint=http"
-      - "--certificatesresolvers.http.acme.caserver=${TRAEFIK_ACME_CASERVER:-https://acme-v02.api.letsencrypt.org/directory"
+      - "--certificatesresolvers.http.acme.caserver=${TRAEFIK_ACME_CASERVER:-https://acme-v02.api.letsencrypt.org/directory}"
       # enable dashboard
       - "--api.dashboard=true"
       # define entrypoints