     @find(".is-dragging").removeClass 'is-dragging'
 
   onDragOver: (event) =>
-    unless event.originalEvent.dataTransfer.getData('atom-event') == true
+    unless event.originalEvent.dataTransfer.getData('atom-event') is 'true'
       event.preventDefault()
       event.stopPropagation()
       return



  onDrop: (event) =>
    unless event.originalEvent.dataTransfer.getData('atom-event') == true
      event.preventDefault()
      event.stopPropagation()
      return

      event.preventDefault()
      return

    event.originalEvent.dataTransfer.setData 'atom-event', 'true'

    el = $(event.target).closest('.sortable')
    el.addClass 'is-dragging'
