diff --git a/docker-compose.yml b/docker-compose.yml
index dc68090..5685c6c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -19,7 +19,7 @@ services:
       context: server
       dockerfile: Containerfile
     environment:
-      DOMAIN: website.internal
+      DOMAINS: website.internal
       SERVER_ID: one
       ACME_CHALLENGE_URL: http://renewer/.well-known/acme-challenge
       CONTROL_DOMAIN: one.control.internal
@@ -41,7 +41,7 @@ services:
   webserver_two:
     image: git.m724.eu/minecon724/static-website-assistant:master
     environment:
-      DOMAIN: website.internal
+      DOMAINS: website.internal
       SERVER_ID: two
       ACME_CHALLENGE_URL: http://renewer/.well-known/acme-challenge
       CONTROL_DOMAIN: two.control.internal