diff --git a/linux/base-config-debian/roles/base-config-debian-os/tasks/main.yaml b/linux/base-config-debian/roles/base-config-debian-os/tasks/main.yaml
index 437ccb3..8afe44a 100644
--- a/linux/base-config-debian/roles/base-config-debian-os/tasks/main.yaml
+++ b/linux/base-config-debian/roles/base-config-debian-os/tasks/main.yaml
@@ -165,10 +165,12 @@
     block: |
       set superusers="{{ user_grub }}"
       password_pbkdf2 {{ user_grub }} {{ code_grub }}
+  register: grub_register
 
 # update grub
 - name: update grub config
   command: update-grub
+  when: grub_register.changed
 
 #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++