diff --git a/templates/Guacamole/0/docker-compose.yml b/templates/Guacamole/0/docker-compose.yml
index 09d9112..a1bb51b 100644
--- a/templates/Guacamole/0/docker-compose.yml
+++ b/templates/Guacamole/0/docker-compose.yml
@@ -7,6 +7,7 @@ services:
       - 1.1.1.1
       - 1.0.0.1
     environment:
+      GUACD_HOSTNAME: guacd
       POSTGRES_HOSTNAME: postgres
       POSTGRES_DATABASE: guacamole_db
       POSTGRES_USER: guacamole_user