diff --git a/scheduler-editor.html b/scheduler-editor.html
index a177484..d539adb 100644
--- a/scheduler-editor.html
+++ b/scheduler-editor.html
@@ -48,11 +48,11 @@
           requires_session_auth: false, // creates public configuration which does not require session tokens
           scheduler: {
             // callback URLs to be set in email confirmation messages
-            rescheduling_url: `${window.location.origin}/reschedule/:booking_id`,
-            cancellation_url: `${window.location.origin}/cancel/:booking_id`,
+            rescheduling_url: `${window.location.origin}/reschedule/:booking_ref`,
+            cancellation_url: `${window.location.origin}/cancel/:booking_ref`,
           },
         },
       };
     </script>
   </body>
-</html>   
\ No newline at end of file
+</html>