diff --git a/core/tests/Drupal/Tests/Core/UrlTest.php b/core/tests/Drupal/Tests/Core/UrlTest.php
index b2e0976b0f..ff4cb01b8b 100644
--- a/core/tests/Drupal/Tests/Core/UrlTest.php
+++ b/core/tests/Drupal/Tests/Core/UrlTest.php
@@ -736,6 +736,7 @@ public function providerFromValidInternalUri() {
       ['/?page=1000'],
       ['?page=1000'],
       ['?breed=bengal&page=1000'],
+      ['?referrer=https://kittenfacts'],
       // Paths with various token formats but no leading slash.
       ['/[duckies]'],
       ['/%bunnies'],