diff --git a/docker-compose.yml b/docker-compose.yml
index 96a662b..59909c2 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -34,7 +34,7 @@ services:
       - zammad-postgresql
     environment:
       - POSTGRESQL_USER=${POSTGRES_USER}
-      - POSTGRESQL_PASSWORD=${POSTGRES_PASS}      
+      - POSTGRESQL_PASS=${POSTGRES_PASS}      
     image: ${IMAGE_REPO}:zammad${VERSION}
     links:
       - zammad-elasticsearch