diff --git a/assets/scripts/app/models/extensions.coffee b/assets/scripts/app/models/extensions.coffee
index e265ede8..de5cff0a 100644
--- a/assets/scripts/app/models/extensions.coffee
+++ b/assets/scripts/app/models/extensions.coffee
@@ -6,7 +6,7 @@ Travis.DurationCalculations = Ember.Mixin.create
       duration
     else
       Travis.Helpers.durationFrom(@get('startedAt'), @get('finishedAt'))
-  ).property('_duration', 'finishedAt', 'startedAt')
+  ).property('_duration', 'finishedAt', 'startedAt', 'notStarted')
 
   updateTimes: ->
     unless @get('isFinished')
diff --git a/assets/scripts/app/models/job.coffee b/assets/scripts/app/models/job.coffee
index 23649a37..6ceb04eb 100644
--- a/assets/scripts/app/models/job.coffee
+++ b/assets/scripts/app/models/job.coffee
@@ -21,6 +21,7 @@ require 'travis/model'
   annotations: Ember.hasMany('Travis.Annotation')
 
   _config: Ember.attr('object', key: 'config')
+  _duration: Ember.attr(Number, key: 'duration')
 
   log: ( ->
     @set('isLogAccessed', true)