diff --git a/tests/phpunit.xml b/tests/phpunit.xml
index b36e69d..49c3f04 100644
--- a/tests/phpunit.xml
+++ b/tests/phpunit.xml
@@ -4,8 +4,8 @@
     <testsuite name="All">
      <directory suffix="Test.php">Composition</directory>
       <directory suffix="Test.php">Infinite</directory>
-      <!--<directory suffix="Test.php">Math</directory>
-     <directory suffix="Test.php">Multi</directory>-->
+      <directory suffix="Test.php">Math</directory>
+      <!--<directory suffix="Test.php">Multi</directory>-->
       <directory suffix="Test.php">Random</directory>
       <directory suffix="Test.php">Reduce</directory>
       <directory suffix="Test.php">Single</directory>