diff --git a/tests/phpunit.xml b/tests/phpunit.xml
index 01d5e11..50bfa30 100644
--- a/tests/phpunit.xml
+++ b/tests/phpunit.xml
@@ -4,9 +4,9 @@
     <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">Math</directory>-->
       <directory suffix="Test.php">Multi</directory>
-      <directory suffix="Test.php">Random</directory>-->
+      <directory suffix="Test.php">Random</directory>
       <directory suffix="Test.php">Reduce</directory>
       <directory suffix="Test.php">Single</directory>
       <directory suffix="Test.php">Summary</directory>