diff --git a/src/common/helper.js b/src/common/helper.js
index 506a60f7..60f398c2 100644
--- a/src/common/helper.js
+++ b/src/common/helper.js
@@ -952,7 +952,9 @@ async function postEvent (topic, payload, options = {}) {
     'mime-type': 'application/json',
     payload
   }
-  _.merge(message,options)
+  if (options.key) {
+   message.key = options.key
+   }
   await client.postEvent(message)
   await eventDispatcher.handleEvent(topic, { value: payload, options })
 }
diff --git a/src/services/WorkPeriodService.js b/src/services/WorkPeriodService.js
index cd149a36..e16ce290 100644
--- a/src/services/WorkPeriodService.js
+++ b/src/services/WorkPeriodService.js
@@ -290,7 +290,7 @@ async function updateWorkPeriod (currentUser, id, data) {
   }
 
   //await helper.postEvent(config.TAAS_WORK_PERIOD_UPDATE_TOPIC, updated.toJSON(), { oldValue: oldValue })
-  await helper.postEvent(config.TAAS_WORK_PERIOD_UPDATE_TOPIC, updated.toJSON(), {"key":data.resourceBookingId})
+  await helper.postEvent(config.TAAS_WORK_PERIOD_UPDATE_TOPIC, updated.toJSON(), {oldValue: oldValue, "key":data.resourceBookingId})
   return updated.dataValues
 }