diff --git a/atom/browser/lib/guest-window-manager.coffee b/atom/browser/lib/guest-window-manager.coffee
index fb961dddef40..6f5040ce21d3 100644
--- a/atom/browser/lib/guest-window-manager.coffee
+++ b/atom/browser/lib/guest-window-manager.coffee
@@ -21,7 +21,6 @@ createGuest = (embedder, url, frameName, options) ->
   # guest is closed by user then we should prevent |embedder| from double
   # closing guest.
   closedByEmbedder = ->
-    embedder.send 'ATOM_SHELL_GUEST_WINDOW_MANAGER_WINDOW_CLOSED', guest.id
     guest.removeListener 'closed', closedByUser
     guest.destroy()
   closedByUser = ->