diff --git a/core/modules/simpletest/src/Tests/FolderTest.php b/core/modules/simpletest/src/Tests/FolderTest.php
index 9df2b3349cc08a274d31313e2a6206fd2ac69755..99e2ee7e3bc63b38a5b7c749319c3cf162e5dde2 100644
--- a/core/modules/simpletest/src/Tests/FolderTest.php
+++ b/core/modules/simpletest/src/Tests/FolderTest.php
@@ -10,7 +10,7 @@
 use Drupal\simpletest\WebTestBase;
 
 /**
- * This test will check SimpleTest's treatment of hook_install during setUp. 
+ * This test will check SimpleTest's treatment of hook_install during setUp.
  * Image module is used for test.
  *
  * @group simpletest
diff --git a/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php b/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php
index e08f1b3c7a029c61e6293b0a2bf624a58749f052..df90beb7590a72947282825a56ae6177193bc91d 100644
--- a/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php
@@ -200,7 +200,7 @@ function testOptimizeRemoveCharset() {
     $cases = array(
       array(
         'asset' => array(
-          'type' => 'inline', 
+          'type' => 'inline',
           'data' => '@charset "UTF-8";html{font-family:"sans-serif";}',
           'preprocess' => FALSE,
         ),