diff --git a/source/zen.coffee b/source/zen.coffee
index 0eec335..c249bd0 100644
--- a/source/zen.coffee
+++ b/source/zen.coffee
@@ -31,7 +31,7 @@ window.ZEN = ZEN = do ->
 
   _url = ->
     url = "#{ZEN.instance.host}"
-    url += ":#{ZEN.intance.port}" if ZEN.instance.port
+    url += ":#{ZEN.instance.port}" if ZEN.instance.port
     url += "/monitor/#{ZEN.instance.password}"
 
   _utc = (object) ->