diff --git a/installer/roles/local_docker/templates/docker-compose.yml.j2 b/installer/roles/local_docker/templates/docker-compose.yml.j2
index 29677669b1..cdc6713480 100644
--- a/installer/roles/local_docker/templates/docker-compose.yml.j2
+++ b/installer/roles/local_docker/templates/docker-compose.yml.j2
@@ -167,7 +167,7 @@ services:
     container_name: awx_postgres
     restart: unless-stopped
     volumes:
-      - {{ postgres_data_dir }}/10/data/:/var/lib/postgresql/data:Z
+      - "{{ postgres_data_dir }}/10/data/:/var/lib/postgresql/data:Z"
     environment:
       POSTGRES_USER: {{ pg_username }}
       POSTGRES_PASSWORD: {{ pg_password }}