diff --git a/oauth3.implicit.js b/oauth3.implicit.js
index 8655f9d..41dc490 100644
--- a/oauth3.implicit.js
+++ b/oauth3.implicit.js
@@ -337,7 +337,7 @@
           action: action
         //, response_type: 'confirmation'
         , client_id: opts.client_id || opts.client_uri
-        , client_uri: opts.client_uri
+        , client_uri: opts.client_uri || opts.client_id
         , state: state
         , debug: opts.debug
         };