   removeOnboarding: ->
 
     @onboarding?.destroy()
-    delete @onboarding
+    @onboarding = null


    @input.input.on 'focus', @lazyBound 'handleFocus', yes

    @once 'NewParticipantButtonClicked', => @onboarding?.destroy()


  handleThresholdReached: ->

    channel.once 'AddedToChannel', @bound 'removeOnboarding'


  handleOnboardingViewClick: (event) ->

    return  unless event.target.tagName is 'A'

    @removeOnboarding()
    @showAutoCompleteInput()


  createHeaderViews: ->
