diff --git a/docs/content/guide/concepts.ngdoc b/docs/content/guide/concepts.ngdoc
index 73993d40f0ce..07605d43b9c6 100644
--- a/docs/content/guide/concepts.ngdoc
+++ b/docs/content/guide/concepts.ngdoc
@@ -384,3 +384,5 @@ built-in service provided by Angular for accessing a server backend. `$http` is
 [`XMLHttpRequest`](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest)
 and [JSONP](http://en.wikipedia.org/wiki/JSONP) transports.
 
+*This no longer works.  No definition found for Table yahoo.finance.xchange.
+