diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index 3e70b440b..08416c2c2 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -19,6 +19,7 @@ services:
     environment:
       SETTINGS_FILE: ./config/production.cfg
       IRCCAT: irccat.orga.emfcamp.org:12345
+      FLASK_ENV: production
     logging:
       driver: journald