diff --git a/tests/_files/NotSelfDescribingTest.php b/tests/_files/NotSelfDescribingTest.php
index e48389f3c6e..4ac5999b06f 100644
--- a/tests/_files/NotSelfDescribingTest.php
+++ b/tests/_files/NotSelfDescribingTest.php
@@ -1,5 +1,12 @@
 <?php
-
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 use PHPUnit\Framework\Test;
 use PHPUnit\Framework\TestResult;