diff --git a/tasks/main.yml b/tasks/main.yml
index b7d01cb..bdbc9e9 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -113,8 +113,8 @@
 - name: 'ensure firewall'
   when:
     - ansible_facts["system"] == 'Linux'
-    - packages["firewalld"] is defined
-    - packages["python3-firewall"] is defined
+    - ansible_facts.packages["firewalld"] is defined
+    - ansible_facts.packages["python3-firewall"] is defined
     - ensure_postfix is defined
     - ensure_postfix.firewall_list is defined
     - ensure_postfix.firewall_list is iterable