diff --git a/ansible/inventories/sifi.yaml b/ansible/inventories/sifi.yaml
index 161b5dc..4936fd3 100644
--- a/ansible/inventories/sifi.yaml
+++ b/ansible/inventories/sifi.yaml
@@ -6,7 +6,6 @@ sifi:
         ns1.sifi.isti.cnr.it:
           ansible_host:  146.48.108.51
     nameserver:
-      hosts:
         opn:
     workers:
       hosts: