diff --git a/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php b/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php
deleted file mode 100644
index c2b73cea94f6..000000000000
--- a/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php
+++ /dev/null
@@ -1,97 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\HttpKernel\Config;
-
-use Symfony\Component\Config\Resource\SelfCheckingResourceInterface;
-
-/**
- * EnvParametersResource represents resources stored in prefixed environment variables.
- *
- * @author Chris Wilkinson <chriswilkinson84@gmail.com>
- *
- * @deprecated since version 3.4, to be removed in 4.0
- */
-class EnvParametersResource implements SelfCheckingResourceInterface, \Serializable
-{
-    /**
-     * @var string
-     */
-    private $prefix;
-
-    /**
-     * @var string
-     */
-    private $variables;
-
-    /**
-     * Constructor.
-     *
-     * @param string $prefix
-     */
-    public function __construct($prefix)
-    {
-        $this->prefix = $prefix;
-        $this->variables = $this->findVariables();
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function __toString()
-    {
-        return serialize($this->getResource());
-    }
-
-    /**
-     * @return array An array with two keys: 'prefix' for the prefix used and 'variables' containing all the variables watched by this resource
-     */
-    public function getResource()
-    {
-        return array('prefix' => $this->prefix, 'variables' => $this->variables);
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function isFresh($timestamp)
-    {
-        return $this->findVariables() === $this->variables;
-    }
-
-    public function serialize()
-    {
-        return serialize(array('prefix' => $this->prefix, 'variables' => $this->variables));
-    }
-
-    public function unserialize($serialized)
-    {
-        $unserialized = unserialize($serialized, array('allowed_classes' => false));
-
-        $this->prefix = $unserialized['prefix'];
-        $this->variables = $unserialized['variables'];
-    }
-
-    private function findVariables()
-    {
-        $variables = array();
-
-        foreach ($_SERVER as $key => $value) {
-            if (0 === strpos($key, $this->prefix)) {
-                $variables[$key] = $value;
-            }
-        }
-
-        ksort($variables);
-
-        return $variables;
-    }
-}
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index d97de8a722a4..913ba1a81ea1 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -26,7 +26,6 @@
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Bundle\BundleInterface;
-use Symfony\Component\HttpKernel\Config\EnvParametersResource;
 use Symfony\Component\HttpKernel\Config\FileLocator;
 use Symfony\Component\HttpKernel\DependencyInjection\MergeExtensionConfigurationPass;
 use Symfony\Component\HttpKernel\DependencyInjection\AddAnnotatedClassesToCachePass;
@@ -625,7 +624,6 @@ protected function buildContainer()
         }
 
         $container->addCompilerPass(new AddAnnotatedClassesToCachePass($this));
-        $container->addResource(new EnvParametersResource('SYMFONY__'));
 
         return $container;
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/Config/EnvParametersResourceTest.php b/src/Symfony/Component/HttpKernel/Tests/Config/EnvParametersResourceTest.php
deleted file mode 100644
index 986e05d8b888..000000000000
--- a/src/Symfony/Component/HttpKernel/Tests/Config/EnvParametersResourceTest.php
+++ /dev/null
@@ -1,110 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\HttpKernel\Tests\Config;
-
-use PHPUnit\Framework\TestCase;
-use Symfony\Component\HttpKernel\Config\EnvParametersResource;
-
-/**
- * @group legacy
- */
-class EnvParametersResourceTest extends TestCase
-{
-    protected $prefix = '__DUMMY_';
-    protected $initialEnv;
-    protected $resource;
-
-    protected function setUp()
-    {
-        $this->initialEnv = array(
-            $this->prefix.'1' => 'foo',
-            $this->prefix.'2' => 'bar',
-        );
-
-        foreach ($this->initialEnv as $key => $value) {
-            $_SERVER[$key] = $value;
-        }
-
-        $this->resource = new EnvParametersResource($this->prefix);
-    }
-
-    protected function tearDown()
-    {
-        foreach ($_SERVER as $key => $value) {
-            if (0 === strpos($key, $this->prefix)) {
-                unset($_SERVER[$key]);
-            }
-        }
-    }
-
-    public function testGetResource()
-    {
-        $this->assertSame(
-            array('prefix' => $this->prefix, 'variables' => $this->initialEnv),
-            $this->resource->getResource(),
-            '->getResource() returns the resource'
-        );
-    }
-
-    public function testToString()
-    {
-        $this->assertSame(
-            serialize(array('prefix' => $this->prefix, 'variables' => $this->initialEnv)),
-            (string) $this->resource
-        );
-    }
-
-    public function testIsFreshNotChanged()
-    {
-        $this->assertTrue(
-            $this->resource->isFresh(time()),
-            '->isFresh() returns true if the variables have not changed'
-        );
-    }
-
-    public function testIsFreshValueChanged()
-    {
-        reset($this->initialEnv);
-        $_SERVER[key($this->initialEnv)] = 'baz';
-
-        $this->assertFalse(
-            $this->resource->isFresh(time()),
-            '->isFresh() returns false if a variable has been changed'
-        );
-    }
-
-    public function testIsFreshValueRemoved()
-    {
-        reset($this->initialEnv);
-        unset($_SERVER[key($this->initialEnv)]);
-
-        $this->assertFalse(
-            $this->resource->isFresh(time()),
-            '->isFresh() returns false if a variable has been removed'
-        );
-    }
-
-    public function testIsFreshValueAdded()
-    {
-        $_SERVER[$this->prefix.'3'] = 'foo';
-
-        $this->assertFalse(
-            $this->resource->isFresh(time()),
-            '->isFresh() returns false if a variable has been added'
-        );
-    }
-
-    public function testSerializeUnserialize()
-    {
-        $this->assertEquals($this->resource, unserialize(serialize($this->resource)));
-    }
-}
diff --git a/src/Symfony/Component/HttpKernel/Tests/KernelTest.php b/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
index 613c6f990202..8b49ab9c984c 100644
--- a/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
@@ -16,7 +16,6 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\Filesystem\Filesystem;
 use Symfony\Component\HttpKernel\Bundle\BundleInterface;
-use Symfony\Component\HttpKernel\Config\EnvParametersResource;
 use Symfony\Component\HttpKernel\Kernel;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\HttpFoundation\Request;
@@ -104,42 +103,6 @@ public function testClassCacheIsNotLoadedByDefault()
         $kernel->boot();
     }
 
-    public function testEnvParametersResourceIsAdded()
-    {
-        $container = new ContainerBuilder();
-        $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\Tests\Fixtures\KernelForTest')
-            ->disableOriginalConstructor()
-            ->setMethods(array('getContainerBuilder', 'prepareContainer', 'getCacheDir', 'getLogDir'))
-            ->getMock();
-        $kernel->expects($this->any())
-            ->method('getContainerBuilder')
-            ->will($this->returnValue($container));
-        $kernel->expects($this->any())
-            ->method('prepareContainer')
-            ->will($this->returnValue(null));
-        $kernel->expects($this->any())
-            ->method('getCacheDir')
-            ->will($this->returnValue(sys_get_temp_dir()));
-        $kernel->expects($this->any())
-            ->method('getLogDir')
-            ->will($this->returnValue(sys_get_temp_dir()));
-
-        $reflection = new \ReflectionClass(get_class($kernel));
-        $method = $reflection->getMethod('buildContainer');
-        $method->setAccessible(true);
-        $method->invoke($kernel);
-
-        $found = false;
-        foreach ($container->getResources() as $resource) {
-            if ($resource instanceof EnvParametersResource) {
-                $found = true;
-                break;
-            }
-        }
-
-        $this->assertTrue($found);
-    }
-
     public function testBootKernelSeveralTimesOnlyInitializesBundlesOnce()
     {
         $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer'));