diff --git a/lib/ansible/modules/extras/monitoring/zabbix_maintenance.py b/lib/ansible/modules/extras/monitoring/zabbix_maintenance.py
index 1d7caad30a..89f792ce5d 100644
--- a/lib/ansible/modules/extras/monitoring/zabbix_maintenance.py
+++ b/lib/ansible/modules/extras/monitoring/zabbix_maintenance.py
@@ -108,6 +108,7 @@ options:
             - The timeout of API request (seconds).
         default: 10
         version_added: "2.1"
+        required: false
 notes:
     - Useful for setting hosts in maintenance mode before big update,
       and removing maintenance window after update.