diff --git a/curriculum/challenges/english/05-back-end-development-and-apis/back-end-development-and-apis-projects/url-shortener-microservice.md b/curriculum/challenges/english/05-back-end-development-and-apis/back-end-development-and-apis-projects/url-shortener-microservice.md
index b10b50c3a9..7b1bf8c31e 100644
--- a/curriculum/challenges/english/05-back-end-development-and-apis/back-end-development-and-apis-projects/url-shortener-microservice.md
+++ b/curriculum/challenges/english/05-back-end-development-and-apis/back-end-development-and-apis-projects/url-shortener-microservice.md
@@ -96,7 +96,7 @@ async (getUserInput) => {
   const res = await fetch(url + '/api/shorturl', {
     method: 'POST',
     headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
-    body: `url=ftp:/john-doe.org`
+    body: `url=ftp:/john-doe.invalidTLD`
   });
   if (res.ok) {
     const { error } = await res.json();