diff --git a/playbooks/sync_mailu.yaml b/playbooks/sync_mailu.yaml
index 1ecf264..ef97565 100644
--- a/playbooks/sync_mailu.yaml
+++ b/playbooks/sync_mailu.yaml
@@ -109,6 +109,6 @@
 
     - name: Unpack archive
       ansible.builtin.shell: 'tar -xzf /tmp/dockers-{{ ansible_date_time.date }}.tar.gz -C /'
-      become: yes
+      become: true
       when: inventory_hostname in groups['raspberry']
       
\ No newline at end of file