diff --git a/src/browser/application-menu.coffee b/src/browser/application-menu.coffee
index 5218ff304..4544a963d 100644
--- a/src/browser/application-menu.coffee
+++ b/src/browser/application-menu.coffee
@@ -82,7 +82,8 @@ class ApplicationMenu
   #          window specific items.
   enableWindowSpecificItems: (enable) ->
     for item in @flattenMenuItems(@menu)
-      item.enabled = enable if item.metadata?['windowSpecific']
+      item.enabled = enable if item.metadata?.windowSpecific
+    return
 
   # Replaces VERSION with the current version.
   substituteVersion: (template) ->
@@ -145,7 +146,7 @@ class ApplicationMenu
       if item.command
         item.accelerator = @acceleratorForCommand(item.command, keystrokesByCommand)
         item.click = -> global.atomApplication.sendCommand(item.command)
-        item.metadata['windowSpecific'] = true unless /^application:/.test(item.command)
+        item.metadata.windowSpecific = true unless /^application:/.test(item.command)
       @translateTemplate(item.submenu, keystrokesByCommand) if item.submenu
     template
 
diff --git a/src/browser/atom-application.coffee b/src/browser/atom-application.coffee
index 8fa888730..d79b2bf76 100644
--- a/src/browser/atom-application.coffee
+++ b/src/browser/atom-application.coffee
@@ -388,11 +388,13 @@ class AtomApplication
   # Kill all processes associated with opened windows.
   killAllProcesses: ->
     @killProcess(pid) for pid of @pidsToOpenWindows
+    return
 
   # Kill process associated with the given opened window.
   killProcessForWindow: (openedWindow) ->
     for pid, trackedWindow of @pidsToOpenWindows
       @killProcess(pid) if trackedWindow is openedWindow
+    return
 
   # Kill the process with the given pid.
   killProcess: (pid) ->
diff --git a/src/browser/auto-update-manager.coffee b/src/browser/auto-update-manager.coffee
index a0c1f2da8..3ee0fce3d 100644
--- a/src/browser/auto-update-manager.coffee
+++ b/src/browser/auto-update-manager.coffee
@@ -65,6 +65,7 @@ class AutoUpdateManager
     return unless @releaseVersion?
     for atomWindow in windows
       atomWindow.sendMessage('update-available', {@releaseVersion})
+    return
 
   setState: (state) ->
     return if @state is state