diff --git a/tasks/gateway.yml b/tasks/gateway.yml
index 4cf71ce..d23bd20 100644
--- a/tasks/gateway.yml
+++ b/tasks/gateway.yml
@@ -4,6 +4,7 @@
     path: /etc/dehydrated/domains.txt
     insertafter: "^# nextcloud"
     line: "{{ instance.domain }}"
+  register: dehydrated
   delegate_to: "{{ gateway_host }}"
 
 - name: "gateway: {{ instance.domain }}: Alias zur Zertifikatsliste hinzufügen"
@@ -12,11 +13,13 @@
     insertafter: "^# nextcloud"
     line: "{{ instance.alias }}"
   when: instance.alias is defined
+  register: dehydrated
   delegate_to: "{{ gateway_host }}"
 
 - name: "gateway: {{ instance.domain }}: Zertifikat erstellen"
   command: dehydrated --cron -g
   delegate_to: "{{ gateway_host }}"
+  when: dehydrated.changed
 
 - name: "gateway: {{ instance.domain }}: Proxy einrichten"
   template: