diff --git a/hosts.yml b/hosts.yml
index 63a250f..6d8ccb9 100644
--- a/hosts.yml
+++ b/hosts.yml
@@ -9,7 +9,7 @@ hostnames:
     hosts:
       type: domainname
       default:
-        - variable: intranet.vps.domain_name
+        variable: intranet.vps.domain_name
 
     vars:
       all:
@@ -17,5 +17,6 @@ hostnames:
         ansible_user: root
         ansible_ssh_private_key_file:
           default:
-            - variable: intranet.vps.ssh_key
+            variable: intranet.vps.ssh_key
+          mandatory: false
 ...
diff --git a/userdata.yml b/userdata.yml
index 3277171..2898c2e 100644
--- a/userdata.yml
+++ b/userdata.yml
@@ -3,7 +3,7 @@
 intranet:
   vps:
     domain_name: tutu.fr
-    ssh_key: ./host_vars/forge.gwhirlingai.fr.key
+      ssh_key: ./host_vars/forge.gwhirlingai.fr.key
   
   nginx: