diff --git a/src/Symfony/Bridge/PhpUnit/Tests/CoverageListenerTest.php b/src/Symfony/Bridge/PhpUnit/Tests/CoverageListenerTest.php
index b07effe3d2..b408b74010 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/CoverageListenerTest.php
+++ b/src/Symfony/Bridge/PhpUnit/Tests/CoverageListenerTest.php
@@ -12,10 +12,6 @@ class CoverageListenerTest extends TestCase
             $this->markTestSkipped('This test cannot be run on Windows.');
         }
 
-        if (defined('HHVM_VERSION')) {
-            $this->markTestSkipped('This test cannot be run on HHVM.');
-        }
-
         if (\PHP_VERSION_ID >= 70000) {
             $php = 'phpdbg -qrr';
         } else {
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
index d26331fba8..fb80cd4936 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
@@ -448,9 +448,6 @@ class XmlFileLoaderTest extends TestCase
         if (extension_loaded('suhosin') && false === strpos(ini_get('suhosin.executor.include.whitelist'), 'phar')) {
             $this->markTestSkipped('To run this test, add "phar" to the "suhosin.executor.include.whitelist" settings in your php.ini file.');
         }
-        if (defined('HHVM_VERSION')) {
-            $this->markTestSkipped('HHVM makes this test conflict with those run in separate processes.');
-        }
 
         require_once self::$fixturesPath.'/includes/ProjectWithXsdExtensionInPhar.phar';
 
diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
index 3281d4a101..bf103c7cdb 100644
--- a/src/Symfony/Component/Process/Process.php
+++ b/src/Symfony/Component/Process/Process.php
@@ -288,13 +288,10 @@ class Process implements \IteratorAggregate
             // @see : https://bugs.php.net/69442
             $ptsWorkaround = fopen(__FILE__, 'r');
         }
-        if (defined('HHVM_VERSION')) {
-            $envPairs = $env;
-        } else {
-            $envPairs = array();
-            foreach ($env as $k => $v) {
-                $envPairs[] = $k.'='.$v;
-            }
+
+        $envPairs = array();
+        foreach ($env as $k => $v) {
+            $envPairs[] = $k.'='.$v;
         }
 
         if (!is_dir($this->cwd)) {