diff --git a/roles/bootstrap/tasks/users@Debian.yml b/roles/bootstrap/tasks/users@Debian.yml
index 5668158..8d7e2b8 100644
--- a/roles/bootstrap/tasks/users@Debian.yml
+++ b/roles/bootstrap/tasks/users@Debian.yml
@@ -15,7 +15,7 @@
     state: present
   loop: "{{ admins }}"
   register: admins_created
-  when: admins is not none
+  when: admins is defined
   tags: ['default', 'add_admins']
 - name: Create guest user
   user:
@@ -26,7 +26,7 @@
     state: present
   loop: "{{ guests }}"
   register: guests_created
-  when: guests is not none
+  when: guests is defined
   tags: ['add_guests']
 - name: Create standard users
   user:
@@ -41,5 +41,5 @@
     state: present
   loop: "{{ users }}"
   register: users_created
-  when: users is not none
+  when: users is defined
   tags: ['default', 'add_users']