diff --git a/tasks/install.yaml b/tasks/install.yaml
index 648f3bb..b9f599d 100644
--- a/tasks/install.yaml
+++ b/tasks/install.yaml
@@ -7,7 +7,7 @@
 
     # install zabbix-server - debian
     - name: "install zabbix-server"
-      when: 'ansible_os_family == "Debian"'
+      when: 'ansible_facts["os_family"] == "Debian"'
       block:
 
         # remove old server
@@ -25,7 +25,7 @@
             name: "{{ item }}"
             state: "present"
             update_cache: true
-          when: 'ansible_os_family == "Debian"'
+          when: 'ansible_facts["os_family"] == "Debian"'
           loop:
             - "zabbix-server-mysql"
             - "zabbix-sql-scripts"