diff --git a/src/Objects/WordPressError.php b/src/Objects/WordPressError.php
index 9fe24ef..53e8275 100644
--- a/src/Objects/WordPressError.php
+++ b/src/Objects/WordPressError.php
@@ -12,5 +12,5 @@ class WordPressError extends WordPressObject
 
     public string $message;
 
-    public stdClass $data;
+    public ?stdClass $data;
 }