diff --git a/tasks/main.yml b/tasks/main.yml
index b956149..2e6211d 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -26,5 +26,6 @@
     owner: root
     group: root
     mode: 'u=rw,g=r,o=r'
+    validate: 'unbound-checkconf %s'
   notify:
     - restart unbound