diff --git a/playbook.yml b/playbook.yml
index 3974e80..ef67c5d 100644
--- a/playbook.yml
+++ b/playbook.yml
@@ -15,4 +15,4 @@
     - vars/testing.yml
   roles:
     - users
-    - basic_packages
\ No newline at end of file
+    - basic_packages
diff --git a/roles/basic_packages/tasks/main.yml b/roles/basic_packages/tasks/main.yml
index 1bd84c6..7e7d4ac 100644
--- a/roles/basic_packages/tasks/main.yml
+++ b/roles/basic_packages/tasks/main.yml
@@ -24,4 +24,4 @@
     hour: "3"
     user: root
     job: "/usr/sbin/rear mkbackup > /dev/null"
-    cron_file: rear_backup_full
\ No newline at end of file
+    cron_file: rear_backup_full
diff --git a/roles/users/tasks/main.yml b/roles/users/tasks/main.yml
index a4579c9..1575ffb 100644
--- a/roles/users/tasks/main.yml
+++ b/roles/users/tasks/main.yml
@@ -26,22 +26,22 @@
     name: lea
     shell: /bin/bash
     groups: admins
-    append: yes
+    append: true
 
 - name: Ensure user "beat" exists
   ansible.builtin.user:
     name: beat
     shell: /bin/bash
     groups: admins
-    append: yes
+    append: true
 
 - name: Ensure user "rulrich" exists
   ansible.builtin.user:
     name: rulrich
     shell: /bin/bash
     groups: admins
-    append: yes
-    
+    append: true
+
 - name: Set up authorized keys for user lea
   ansible.posix.authorized_key:
     user: lea
@@ -65,4 +65,3 @@
     key: '{{ item }}'
   with_file:
     - public_keys/rulrich
-