diff --git a/core/tests/Drupal/Tests/Core/Block/BlockBaseTest.php b/core/tests/Drupal/Tests/Core/Block/BlockBaseTest.php
index 028ea73..bfdbdd2 100644
--- a/core/tests/Drupal/Tests/Core/Block/BlockBaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Block/BlockBaseTest.php
@@ -23,8 +23,9 @@ class BlockBaseTest extends UnitTestCase {
    * @see \Drupal\Core\Block\BlockBase::getMachineNameSuggestion().
    */
   public function testGetMachineNameSuggestion() {
+    $module_handler = $this->getMock('Drupal\Core\Extension\ModuleHandlerInterface');
     $transliteration = $this->getMockBuilder('Drupal\Core\Transliteration\PHPTransliteration')
-      // @todo Inject the module handler into PHPTransliteration.
+      ->setConstructorArgs(array(NULL, $module_handler))
       ->setMethods(array('readLanguageOverrides'))
       ->getMock();