diff --git a/examples/app.py b/examples/app.py
index 5639f97..fb1d804 100644
--- a/examples/app.py
+++ b/examples/app.py
@@ -5,6 +5,7 @@ Prerequisites
 
     export SPOTIPY_CLIENT_ID=client_id_here
     export SPOTIPY_CLIENT_SECRET=client_secret_here
+    export SPOTIPY_REDIRECT_URI='http://127.0.0.1:8080' // added to your [app settings](https://developer.spotify.com/dashboard/applications)
     // on Windows, use `SET` instead of `export`
 
 Run app.py
@@ -53,4 +54,4 @@ def playlists():
     if not session.get('token_info'):
         return redirect('/')
     else:
-        return spotify.current_user_playlists()
\ No newline at end of file
+        return spotify.current_user_playlists()