diff --git a/README.md b/README.md
index e0684b0..b27a800 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ You'll also need to supply some way of authenticating yourself to Facebook.
 Do this by creating a SECRETS.txt file with the following lines:
 
 ```
-uid=<Contains your Facebook user id>
+uid=<Contains your Facebook user id. Not nickname in the URL of your profile. If struggling, get uid the same way as client_id below.>
 cookie=<Contains your Facebook cookie>
 client_id=<Contains your Facebook client id. Find it by inspecting the GET parameters sent when your browser requests `facebook.com/pull` using your browser's dev tools.>
 ```