core/modules/system/tests/src/Functional/Common/UrlTest.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/modules/system/tests/src/Functional/Common/UrlTest.php b/core/modules/system/tests/src/Functional/Common/UrlTest.php
index 163be42..92c9656 100644
--- a/core/modules/system/tests/src/Functional/Common/UrlTest.php
+++ b/core/modules/system/tests/src/Functional/Common/UrlTest.php
@@ -306,9 +306,9 @@ public function testExternalUrls() {
 
     // Verify external URL can be extended with a query string.
     $url = $test_url;
-    $query = [$this->randomMachineName(5) => $this->randomMachineName(5)];
+    $query = ['awesome' => 'drupal'];
     $result = Url::fromUri($url, ['query' => $query])->toString();
-    $this->assertEqual($url . '?' . http_build_query($query, '', '&'), $result, 'External URL can be extended with a query string in $options.');
+    $this->assertSame('https://www.drupal.org/?awesome=drupal', $result);
 
     // Verify query string can be extended in an external URL.
     $url = $test_url . '?drupal=awesome';