diff --git a/roles/docker-discourse/templates/app.yml.j2 b/roles/docker-discourse/templates/app.yml.j2
index a00ddeb3..cf29905c 100644
--- a/roles/docker-discourse/templates/app.yml.j2
+++ b/roles/docker-discourse/templates/app.yml.j2
@@ -8,7 +8,7 @@
 ## visit http://www.yamllint.com/ to validate this file as needed
 
 templates:
-{% if enable_central_database | bool %}
+{% if not enable_central_database | bool %}
   - "templates/postgres.template.yml"
 {% endif %}
   - "templates/redis.template.yml"