diff --git a/src/atom.coffee b/src/atom.coffee
index 8bf3ab33a..7a5bdf05d 100644
--- a/src/atom.coffee
+++ b/src/atom.coffee
@@ -1,5 +1,6 @@
 #FIXME remove once all packages have been updated
 {Emitter} = require 'emissary'
+Emitter::one = (args...) => @once(args...)
 Emitter::trigger = (args...) => @emit(args...)
 Emitter::subscriptionCount = (args...) => @getSubscriptionCount(args...)