diff --git a/core/tests/Drupal/Tests/Component/Utility/UrlHelperTest.php b/core/tests/Drupal/Tests/Component/Utility/UrlHelperTest.php
index f8a4643..a244e6a 100644
--- a/core/tests/Drupal/Tests/Component/Utility/UrlHelperTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/UrlHelperTest.php
@@ -29,7 +29,7 @@ public function providerTestBuildQuery() {
       array(array('a' => '1', 'b' => '2', 'c' => '3'), 'a=1&b=2&c=3', 'Multiple values were properly concatenated.'),
       array(array('a' => array('b' => '2', 'c' => '3'), 'd' => 'foo'), 'a[b]=2&a[c]=3&d=foo', 'Nested array was properly encoded.'),
       array(array('a' => '1', 'b' => array('c' => array()), 'd' => NULL, 'e' => '', 'f' => '2'), 'a=1&e=&f=2', 'Empty query parameter values are properly ignored.'),
-      array(array('foo' => NULL), 'foo', 'Simple parameters are properly added.'),
+      array(array('foo' => NULL), '', 'Simple parameters are not added.'),
     );
   }