diff --git a/README.md b/README.md
index 1a40080..3aad46d 100644
--- a/README.md
+++ b/README.md
@@ -211,6 +211,7 @@ You can create a very simple demo application like this:
 
 ```javascript
 var providerUri;
+var opts = { client_uri: OAUTH3.utils.clientUri(window.location) };
 
 
 // this is any OAuth3-compatible provider, such as oauth3.org
@@ -218,7 +219,7 @@ var providerUri;
 //
 function onChangeProvider(_providerUri) {
   providerUri = _providerUri;
-  return OAUTH3.discover(providerUri); // just to cache
+  return OAUTH3.discover(providerUri, opts); // just to cache
 }
 
 
@@ -226,7 +227,6 @@ function onChangeProvider(_providerUri) {
 //
 function onClickLogin() {
 
-  var opts = { client_uri: OAuth3.clientUri(window.location) };
   return OAUTH3.implicitGrant(providerUri, opts).then(function (session) {
 
     console.info('Authentication was Successful:');