diff --git a/tasks/main.yml b/tasks/main.yml
index 54c88c7..49715c3 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -46,7 +46,14 @@
     certbot_certname: "{{ postfix_myhostname }}"
   when:
     - postfix_mydestination is defined
-  notify: Restart postfix
+  register: certificat_changed
+
+- name: Restart postfix after certificat installation
+  service:
+    name: postfix
+    status: restarted
+  when:
+    - certificat_changed is changed
 
 - name: Open Firewalld
   firewalld: