diff --git a/core/modules/system/lib/Drupal/system/Tests/Ajax/DialogTest.php b/core/modules/system/lib/Drupal/system/Tests/Ajax/DialogTest.php
index 7b4e093..64780fb 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Ajax/DialogTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Ajax/DialogTest.php
@@ -78,7 +78,7 @@ public function testDialog() {
         'textfield' => 'test',
       ), array(), 'ajax-test/dialog-contents', array(), array('Accept: application/vnd.drupal-dialog'), NULL, array(
       'submit' => array(
-        'dialog_options[target]' => 'ajax-test-dialog-wrapper-1',
+        'dialogOptions[target]' => 'ajax-test-dialog-wrapper-1',
       )
     ));
     $this->assertEqual($normal_expected_response, $ajax_result[3], 'Normal dialog JSON response matches.');