diff --git a/tasks/user_keys.yml b/tasks/user_keys.yml
index a0cdb475df2330a924a72485f9974c8f7333ffcc..8a57474a9c0d8a1935021d23b612d75449e6ef66 100644
--- a/tasks/user_keys.yml
+++ b/tasks/user_keys.yml
@@ -34,7 +34,7 @@
   - name: Keys | Set permission for authorized key file
     file:
       path: /home/{{ username }}/.ssh/auth_keys_fresh
-      mode: 600
+      mode: 0600
 
   - name: Keys | Make sure the authorized_keys file exists
     file: