diff --git a/setup/start/systemd/cloudron-firewall.service b/setup/start/systemd/cloudron-firewall.service
index 5f02ece93..5fb5510d2 100644
--- a/setup/start/systemd/cloudron-firewall.service
+++ b/setup/start/systemd/cloudron-firewall.service
@@ -5,6 +5,7 @@ PartOf=docker.service
 
 [Service]
 Type=oneshot
+Environment="BOX_ENV=cloudron"
 ExecStart="/home/yellowtent/box/setup/start/cloudron-firewall.sh"
 RemainAfterExit=yes