diff --git a/defaults/main.yml b/defaults/main.yml
index dc3a33e..834cc49 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -74,3 +74,4 @@ provissionning_enable_service:
 system_arch_local_mirror:
 #need vfat boot partition with esp label
 provissionning_UEFI_Enable: False
+provissionning_default_root: ''
diff --git a/tasks/main.yml b/tasks/main.yml
index 1cdb1c2..53f3fec 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -116,8 +116,8 @@
     state: present
 - name: change root password
   shell:
-    cmd: "echo 'root:{{ vault_default_root | password_hash('sha512')}}' |arch-chroot /mnt chpasswd -e"
-  when: vault_default_root is defined
+    cmd: "echo 'root:{{ provissionning_default_root | password_hash('sha512')}}' |arch-chroot /mnt chpasswd -e"
+  when:  provissionning_default_root is defined
 - name: Reboot
   reboot:
       msg: reboot in new system