diff --git a/salt/minion.sls b/salt/minion.sls
index e492a49..466fdb3 100644
--- a/salt/minion.sls
+++ b/salt/minion.sls
@@ -17,7 +17,7 @@ download-salt-minion:
     {% endif %}
     - user: root
     - group: wheel
-    - mode: 0644
+    - mode: '0644'
     - unless:
       - test -n "{{ salt_settings.version }}" && '/opt/salt/bin/salt-minion --version=.*{{ salt_settings.version }}.*'
     - require_in: