diff --git a/.examples/docker-compose/insecure/mariadb-cron-redis/fpm-alpine/docker-compose.yml b/.examples/docker-compose/insecure/mariadb-cron-redis/fpm-alpine/docker-compose.yml
index fb83d01..024c931 100644
--- a/.examples/docker-compose/insecure/mariadb-cron-redis/fpm-alpine/docker-compose.yml
+++ b/.examples/docker-compose/insecure/mariadb-cron-redis/fpm-alpine/docker-compose.yml
@@ -26,7 +26,7 @@ services:
      - FRIENDICA_LANG=
      - FRIENDICA_URL=
      - FRIENDICA_SITENAME=
-	 - SMTP=
+     - SMTP=
     env_file:
       - db.env
     depends_on: