diff --git a/tests/Value/CalcRuleValueListTest.php b/tests/Unit/Value/CalcRuleValueListTest.php
similarity index 86%
rename from tests/Value/CalcRuleValueListTest.php
rename to tests/Unit/Value/CalcRuleValueListTest.php
index 51d3a72f..5d73d9e9 100644
--- a/tests/Value/CalcRuleValueListTest.php
+++ b/tests/Unit/Value/CalcRuleValueListTest.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Sabberworm\CSS\Tests\Value;
+namespace Sabberworm\CSS\Tests\Unit\Value;
 
 use PHPUnit\Framework\TestCase;
 use Sabberworm\CSS\Value\CalcRuleValueList;
@@ -10,6 +10,9 @@
 
 /**
  * @covers \Sabberworm\CSS\Value\CalcRuleValueList
+ * @covers \Sabberworm\CSS\Value\RuleValueList
+ * @covers \Sabberworm\CSS\Value\Value
+ * @covers \Sabberworm\CSS\Value\ValueList
  */
 final class CalcRuleValueListTest extends TestCase
 {