diff --git a/.travis.yml b/.travis.yml
index a895e07..47b7737 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -43,7 +43,8 @@ script:
     || (echo 'Idempotence test: fail' && exit 1)
 
   # Check PostgreSQL status.
-  - 'docker exec "$(cat ${container_id})" pg_ctl status'
+  - 'docker exec "$(cat ${container_id})" cat /etc/passwd'
+  - 'docker exec "$(cat ${container_id})" -u postgres pg_ctl status'
 
 notifications:
   webhooks: https://galaxy.ansible.com/api/v1/notifications/