diff --git a/README.md b/README.md
index 3d5d76d..677d672 100644
--- a/README.md
+++ b/README.md
@@ -92,11 +92,11 @@ Now, if you visit `https://example.com/git-mirror/webhook.py` (replace with
 your URL), the script should run and tell you `Repository missing or not 
 found.`.
 
-The next step is to add this as a webhook to the GitHub repository you want to 
-sync with, to create a fresh SSH key and configure it as deployment key for the 
-repository, and to configure git-mirror accordingly. For additional security, 
-one should also configure a shared HMAC secret, such that the webhook can verify 
-that the data indeed comes from GitHub.
+The next step is to add this as a webhook (add ?repository=repo-name at the end!)
+to the GitHub repository you want to sync with, to create a fresh SSH key and
+configure it as deployment key for the repository, and to configure git-mirror
+accordingly. For additional security, one should also configure a shared HMAC
+secret, such that the webhook can verify that the data indeed comes from GitHub.
 
 To make your job easier, there is a script `github-add-hooks.py` that can do 
 all this for you. It assumes that the repository exists on the GitHub side, but