diff --git a/assets/scripts/app/models/build.coffee b/assets/scripts/app/models/build.coffee
index b90e8e6f..26915867 100644
--- a/assets/scripts/app/models/build.coffee
+++ b/assets/scripts/app/models/build.coffee
@@ -78,7 +78,8 @@ require 'travis/model'
       @_super(key)
 
   formattedFinishedAt: (->
-    moment(@get('finishedAt')).format('lll')
+    if finishedAt = @get('finishedAt')
+      moment(finishedAt).format('lll')
   ).property('finishedAt')
 
 @Travis.Build.reopenClass
diff --git a/assets/scripts/app/models/job.coffee b/assets/scripts/app/models/job.coffee
index c2ad2d86..aca10ad7 100644
--- a/assets/scripts/app/models/job.coffee
+++ b/assets/scripts/app/models/job.coffee
@@ -106,7 +106,8 @@ require 'travis/model'
   #       to use it there easily, I would have to refactor job and build
   #       controllers
   formattedFinishedAt: (->
-    moment(@get('finishedAt')).format('lll')
+    if finishedAt = @get('finishedAt')
+      moment(finishedAt).format('lll')
   ).property('finishedAt')
 
 @Travis.Job.reopenClass