diff --git a/roles/nova/vars/main.yml b/roles/nova/vars/main.yml
index 7ecd08d..c2c36b5 100644
--- a/roles/nova/vars/main.yml
+++ b/roles/nova/vars/main.yml
@@ -87,6 +87,8 @@
         driver: noop
       scheduler:
         workers: 8
+      vnc:
+        auth_schemes: vencrypt,none
     nova_ironic:
       DEFAULT:
         log_config_append: null