diff --git a/tasks/postgres.yml b/tasks/postgres.yml
index 96ddad6..5f404ed 100644
--- a/tasks/postgres.yml
+++ b/tasks/postgres.yml
@@ -69,4 +69,4 @@
       key: pgstandby_ip
       value: '{{ pgstandby_ip }}'
 
-  when: groups['dc-1-pgmaster'][0] is defined and groups['dc-2-pgstandby'][0] is defined
+  when: groups['dc-1-pgmaster'] is defined and groups['dc-2-pgstandby'] is defined