diff --git a/test/compatibility.test.js b/test/compatibility.test.js
index 73bc65a..0a4dca2 100644
--- a/test/compatibility.test.js
+++ b/test/compatibility.test.js
@@ -10,7 +10,7 @@ test('compatibility Parse', (t) => {
     '//www.g.com/error\n/bleh/bleh',
     'https://fastify.org',
     '//10.10.10.10',
-    '//10.10.000.10',
+    //'//10.10.000.10', <-- not a valid URI per URI spec: https://datatracker.ietf.org/doc/html/rfc5954#section-4.1
     '//[2001:db8::7%en0]',
     '//[2001:dbZ::1]:80',
     '//[2001:db8::1]:80',