diff --git a/lib/instagram.js b/lib/instagram.js
index 77cdba1..ecfc611 100644
--- a/lib/instagram.js
+++ b/lib/instagram.js
@@ -1423,7 +1423,7 @@ var instagram = function(spec, my) {
 
     var params = {
       client_id: my.auth.client_id,
-      redirect_uri: redirect_uri,
+      redirect_uri: encodeURIComponent(redirect_uri),
       response_type: 'code'
     };