diff --git a/core/modules/block/src/Tests/BlockTemplateSuggestionsTest.php b/core/modules/block/src/Tests/BlockTemplateSuggestionsTest.php
index ffd055f..e1f9472 100644
--- a/core/modules/block/src/Tests/BlockTemplateSuggestionsTest.php
+++ b/core/modules/block/src/Tests/BlockTemplateSuggestionsTest.php
@@ -7,14 +7,14 @@
 
 namespace Drupal\block\Tests;
 
-use Drupal\simpletest\WebTestBase;
+use Drupal\simpletest\KernelTestBase;
 
 /**
  * Tests the block_theme_suggestions_block() function.
  *
  * @group block
  */
-class BlockTemplateSuggestionsTest extends WebTestBase {
+class BlockTemplateSuggestionsTest extends KernelTestBase {
 
   /**
    * Modules to install.