diff --git a/src/dao/AlarmDAO.ts b/src/dao/AlarmDAO.ts
index 8466e1f09..2414ab199 100644
--- a/src/dao/AlarmDAO.ts
+++ b/src/dao/AlarmDAO.ts
@@ -320,7 +320,12 @@ export class AlarmDAO extends AbstractDAO<number, OnmsAlarm> {
     alarm.uei = data.uei;
     alarm.description = data.description;
     alarm.firstEventTime = this.toDate(data.firstEventTime);
+
+    if (!data.lastEvent) {
+      log.warn(`"lastEvent" missing on alarm id={alarm.id}.`);
+    }
     alarm.lastEvent = this.eventDao.fromData(data.lastEvent);
+
     alarm.location = data.location;
     alarm.logMessage = data.logMessage;
     alarm.reductionKey = data.reductionKey;