diff --git a/ansible/playbooks/swappiness.configure.yml b/ansible/playbooks/swappiness.configure.yml
index e3dd3c1..5d9a875 100644
--- a/ansible/playbooks/swappiness.configure.yml
+++ b/ansible/playbooks/swappiness.configure.yml
@@ -19,7 +19,7 @@
       block:
         - name: Configure swappiness
           become: true
-          ansible.builtin.sysctl:
+          ansible.posix.sysctl:
             name: vm.swappiness
             value: "{{ swappiness_value | string }}"
             sysctl_file: "{{ swappiness_sysctl_file }}"
diff --git a/examples/ansible/knockd.yml b/examples/ansible/knockd.yml
index 1029475..7922e14 100644
--- a/examples/ansible/knockd.yml
+++ b/examples/ansible/knockd.yml
@@ -47,3 +47,5 @@
           	cmd_timeout   = 10
           	start_command = /usr/bin/firewall-cmd --add-port=7777/tcp --zone=public
           	stop_command  = /usr/bin/firewall-cmd --remove-port=7777/tcp --zone=public
+        backup: true
+        mode: '0600'