diff --git a/controllers/API.php b/controllers/API.php
index 332843f..efa85fd 100644
--- a/controllers/API.php
+++ b/controllers/API.php
@@ -229,6 +229,8 @@ class API {
     }
 
     $data = [
+      'source' => $webmention->source,
+      'target' => $webmention->target,
       'status' => $code,
     ];