diff --git a/roles/create-lxd/library/host_dns_check.py b/roles/create-lxd/library/host_dns_check.py
index c8b3e17..2dc267e 100755
--- a/roles/create-lxd/library/host_dns_check.py
+++ b/roles/create-lxd/library/host_dns_check.py
@@ -89,5 +89,6 @@
 # Output the results
 print json.dumps(result)
 
-if result["failed"]:
+if 'failed' in result:
     sys.exit(1)
+