diff --git a/src/wp-includes/http.php b/src/wp-includes/http.php
index fda090c4e8..36814e7f89 100644
--- a/src/wp-includes/http.php
+++ b/src/wp-includes/http.php
@@ -535,7 +535,7 @@ function send_origin_headers() {
  * - ftp://example.com/caniload.php - Invalid protocol - only http and https are allowed.
  * - http:///example.com/caniload.php - Malformed URL.
  * - http://user:pass@example.com/caniload.php - Login information.
- * - http://exampleeeee.com/caniload.php - Invalid hostname, as the IP cannot be looked up in DNS.
+ * - http://example.invalid/caniload.php - Invalid hostname, as the IP cannot be looked up in DNS.
  *
  * Examples of URLs that are considered unsafe by default:
  *
diff --git a/tests/phpunit/tests/http/http.php b/tests/phpunit/tests/http/http.php
index 533c584f04..651064dc56 100644
--- a/tests/phpunit/tests/http/http.php
+++ b/tests/phpunit/tests/http/http.php
@@ -549,7 +549,7 @@ class Tests_HTTP_HTTP extends WP_UnitTestCase {
 				'url' => 'http://[exam]ple.com/caniload.php',
 			),
 			'a host whose IPv4 address cannot be resolved' => array(
-				'url' => 'http://exampleeeee.com/caniload.php',
+				'url' => 'http://example.invalid/caniload.php',
 			),
 			'an external request when not allowed'         => array(
 				'url'           => 'http://192.168.0.1/caniload.php',