diff --git a/core/tests/Drupal/Tests/Core/Site/SettingsGetInstanceTest.php b/core/tests/Drupal/Tests/Core/Site/SettingsGetInstanceTest.php
deleted file mode 100644
index 9e82a88..0000000
--- a/core/tests/Drupal/Tests/Core/Site/SettingsGetInstanceTest.php
+++ /dev/null
@@ -1,36 +0,0 @@
-<?php
-
-/**
- * @file
- * Contains \Drupal\Tests\Core\Site\SettingsGetInstanceTest.
- */
-
-namespace Drupal\Tests\Core\Site;
-
-use Drupal\Core\Site\Settings;
-use Drupal\Tests\UnitTestCase;
-
-/**
- * @coversDefaultClass \Drupal\Core\Site\Settings
- * @group Site
- */
-class SettingsGetInstanceTest extends UnitTestCase {
-
-  /**
-   * @covers ::getInstance
-   * @expectedException \BadMethodCallException
-   */
-  public function testGetInstanceWithMissingInstance() {
-    Settings::getInstance();
-  }
-
-  /**
-   * @covers ::getInstance
-   */
-  public function testGetInstance() {
-    $settings = new Settings(array());
-    $singleton = $settings->getInstance();
-    $this->assertEquals($singleton, $settings);
-  }
-
-}
diff --git a/core/tests/Drupal/Tests/Core/Site/SettingsTest.php b/core/tests/Drupal/Tests/Core/Site/SettingsTest.php
index c92f676..bf74946 100644
--- a/core/tests/Drupal/Tests/Core/Site/SettingsTest.php
+++ b/core/tests/Drupal/Tests/Core/Site/SettingsTest.php
@@ -131,4 +131,19 @@ public function testGetApcuPrefix() {
     $this->assertNotEquals($settings::getApcuPrefix('cache_test', '/test/a'), $settings::getApcuPrefix('cache_test', '/test/b'));
   }
 
+  /**
+   * @covers ::getInstance
+   * @expectedException \BadMethodCallException
+   */
+  public function testGetInstanceReflection() {
+    $settings = new Settings(array());
+
+    $class = new \ReflectionClass('Drupal\Core\Site\Settings');
+    $instace_property = $class->getProperty("instance");
+    $instace_property->setAccessible(TRUE);
+    $instace_property->setValue(NULL);
+
+    $singleton = $settings->getInstance();
+  }
+
 }