diff --git a/ansible/roles/win_proxy/tasks/checkmk.yml b/ansible/roles/win_proxy/tasks/checkmk.yml
index 0941b6b..4f92a11 100644
--- a/ansible/roles/win_proxy/tasks/checkmk.yml
+++ b/ansible/roles/win_proxy/tasks/checkmk.yml
@@ -39,6 +39,7 @@
             attributes:
               ipaddress: "{{ hostvars[inventory_hostname].ansible_host }}"
             state: "present"
+          register: host_added
           notify: "activate changes"
 
     - name: Install CheckMK Agent