diff --git a/source/_components/ness_alarm.markdown b/source/_components/ness_alarm.markdown
index 0d525674856..cc60c07a848 100644
--- a/source/_components/ness_alarm.markdown
+++ b/source/_components/ness_alarm.markdown
@@ -64,6 +64,11 @@ scan_interval:
   required: false
   default: '00:01:00'
   type: time
+infer_arming_state:
+  description: Infer the disarmed arming state only via system status events. This works around a bug with some panels (`<v5.8`) which emit `update.status = []` when they are armed.
+  required: false
+  default: false
+  type: boolean
 zones:
   description: List of zones to add
   required: false