diff --git a/actioncable/app/assets/javascripts/action_cable.coffee.erb b/actioncable/app/assets/javascripts/action_cable.coffee.erb
index 6a8b4eeb85575137dec41fd129db622259d7bd97..d2dd8ce25f92e9ae110a5f413743e064008cefba 100644
--- a/actioncable/app/assets/javascripts/action_cable.coffee.erb
+++ b/actioncable/app/assets/javascripts/action_cable.coffee.erb
@@ -4,12 +4,13 @@
 @ActionCable =
   INTERNAL: <%= ActionCable::INTERNAL.to_json %>
 
-  createConsumer: (url = @getConfig("url")) ->
+  createConsumer: (url) ->
+    url ?= @getConfig("url") ? "/cable"
     new ActionCable.Consumer @createWebSocketURL(url)
 
   getConfig: (name) ->
     element = document.head.querySelector("meta[name='action-cable-#{name}']")
-    element?.getAttribute("content") ? '/cable'
+    element?.getAttribute("content")
 
   createWebSocketURL: (url) ->
     if url and not /^wss?:/i.test(url)