diff --git a/roles/preflight/tasks/main.yml b/roles/preflight/tasks/main.yml
index 963278b..4d4b593 100644
--- a/roles/preflight/tasks/main.yml
+++ b/roles/preflight/tasks/main.yml
@@ -2,7 +2,7 @@
 - name: Check change freeze
   ansible.builtin.assert:
     that:
-      - change_freeze == false
+      - not (change_freeze | bool)
     fail_msg: "FROZEN: {{ inventory_hostname }} is under a change freeze. Aborting."
     success_msg: "Change freeze check passed"