diff --git a/README.md b/README.md
index d1b28e9..3919f69 100644
--- a/README.md
+++ b/README.md
@@ -21,8 +21,9 @@ from apns2.payload import Payload
 
 token_hex = 'b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b87'
 payload = Payload(alert="Hello World!", sound="default", badge=1)
+topic = 'com.example.App'
 client = APNsClient('key.pem', use_sandbox=False, use_alternative_port=False)
-client.send_notification(token_hex, payload)
+client.send_notification(token_hex, payload, topic)
 ```
 
 ## Further Info