diff --git a/core/modules/block/src/Tests/BlockInterfaceTest.php b/core/modules/block/src/Tests/BlockInterfaceTest.php
index 0b71146..d4b609b 100644
--- a/core/modules/block/src/Tests/BlockInterfaceTest.php
+++ b/core/modules/block/src/Tests/BlockInterfaceTest.php
@@ -124,7 +124,7 @@ public function testBlockInterface() {
     );
     $form_state = array();
     // Ensure there are no form elements that do not belong to the plugin.
-    $this->assertIdentical($display_block->buildConfigurationForm(array(), $form_state), $expected_form, 'Only the expected form elements were present.');
+    $this->assertIdentical($display_block->buildConfigurationForm(array(), $form_state, array('settings')), $expected_form, 'Only the expected form elements were present.');
 
     $expected_build = array(
       '#children' => 'My custom display message.',