diff --git a/.docker-compose.http.yml b/.docker-compose.http.yml
index d8ff6df..aedcce5 100644
--- a/.docker-compose.http.yml
+++ b/.docker-compose.http.yml
@@ -27,9 +27,9 @@ services:
       DATABASE_URL: mysql://odc:<odcMySqlPw>@db-odc:3306/odc
       OAUTH_KEYCLOAK_CLIENT_ID: opendatenschutzcenter
       OAUTH_KEYCLOAK_CLIENT_SECRET: <clientsecret>
-      OAUTH_KEYCLOAK_SERVER: <httpMethod>://<clientUrl>/keycloak
+      OAUTH_KEYCLOAK_SERVER: '<httpMethod>://<clientUrl>/keycloak'
       OAUTH_KEYCLOAK_REALM: opendatenschutzcenter
-      MAILER_DSN: null://null
+      MAILER_DSN: 'null://null'
       laF_version: 3.0.4
       demo_installation: demo
     labels:
diff --git a/.docker-compose.https.yml b/.docker-compose.https.yml
index b566785..c200ef1 100644
--- a/.docker-compose.https.yml
+++ b/.docker-compose.https.yml
@@ -57,9 +57,9 @@ services:
       DATABASE_URL: mysql://odc:<odcMySqlPw>@db-odc:3306/odc
       OAUTH_KEYCLOAK_CLIENT_ID: opendatenschutzcenter
       OAUTH_KEYCLOAK_CLIENT_SECRET: <clientsecret>
-      OAUTH_KEYCLOAK_SERVER: <clientUrl>/keycloak
+      OAUTH_KEYCLOAK_SERVER: '<httpMethod>://<clientUrl>/keycloak'
       OAUTH_KEYCLOAK_REALM: opendatenschutzcenter
-      MAILER_DSN: null://null
+      MAILER_DSN: 'null://null'
       laF_version: 3.0.4
       demo_installation: demo
     labels: