diff --git a/src/window-bootstrap.coffee b/src/window-bootstrap.coffee
index 15da3237e..6d94e4dc0 100644
--- a/src/window-bootstrap.coffee
+++ b/src/window-bootstrap.coffee
@@ -1,5 +1,5 @@
 # Like sands through the hourglass, so are the days of our lives.
-startTime = new Date().getTime()
+startTime = Date.now()
 
 require './window'
 
@@ -7,4 +7,4 @@ Atom = require './atom'
 window.atom = new Atom()
 window.setUpEnvironment('editor')
 window.startEditorWindow()
-console.log "Window load time: #{new Date().getTime() - startTime}ms"
+console.log "Window load time: #{Date.now() - startTime}ms"