@@ -70,7 +70,7 @@ func (autoscalerStrategy) AllowCreateOnUpdate() bool {

 // PrepareForUpdate clears fields that are not allowed to be set by end users on update.

 func (autoscalerStrategy) PrepareForUpdate(obj, old runtime.Object) {

 	newHPA := obj.(*extensions.HorizontalPodAutoscaler)

-	oldHPA := obj.(*extensions.HorizontalPodAutoscaler)

+	oldHPA := old.(*extensions.HorizontalPodAutoscaler)

 	// Update is not allowed to set status

 	newHPA.Status = oldHPA.Status

 }