diff --git a/tasks/configure.yml b/tasks/configure.yml
index 3d96b15..28504a5 100644
--- a/tasks/configure.yml
+++ b/tasks/configure.yml
@@ -16,7 +16,7 @@
     group: "{{ postgresql_group }}"
     mode: 0600
   notify: restart postgresql
-  when: postgresql_hba_entries | bool
+  when: postgresql_hba_entries | length > 0
 
 - name: Ensure PostgreSQL unix socket dirs exist.
   file: