diff --git a/src/Symfony/Component/HttpFoundation/Session/Session.php b/src/Symfony/Component/HttpFoundation/Session/Session.php
index fde54531e2..63dda8d6bd 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Session.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Session.php
@@ -151,33 +151,6 @@ class Session implements SessionInterface
         return $this->storage->getId();
     }
 
-    /**
-     * Implements the \Serialize interface.
-     *
-     * @return string
-     */
-    public function serialize()
-    {
-        return serialize($this->storage);
-    }
-
-    /**
-     * Implements the \Serialize interface.
-     *
-     * @param string $serialized
-     *
-     * @throws \InvalidArgumentException If the passed string does not unserialize to an instance of SessionStorageInterface
-     */
-    public function unserialize($serialized)
-    {
-        $storage = unserialize($serialized);
-        if (!$storage instanceof SessionStorageInterface) {
-            throw new \InvalidArgumentException('Serialized data did not return a valid instance of SessionStorageInterface');
-        }
-
-        $this->storage = $storage;
-    }
-
     /**
      * Registers a SessionBagInterface with the sessio.
      *
diff --git a/src/Symfony/Component/HttpFoundation/Session/SessionInterface.php b/src/Symfony/Component/HttpFoundation/Session/SessionInterface.php
index ffa7105068..741969b10e 100644
--- a/src/Symfony/Component/HttpFoundation/Session/SessionInterface.php
+++ b/src/Symfony/Component/HttpFoundation/Session/SessionInterface.php
@@ -16,7 +16,7 @@ namespace Symfony\Component\HttpFoundation\Session;
  *
  * @author Drak <drak@zikula.org>
  */
-interface SessionInterface extends \Serializable
+interface SessionInterface
 {
     /**
      * Starts the session storage.
diff --git a/tests/Symfony/Tests/Component/HttpFoundation/Session/SessionTest.php b/tests/Symfony/Tests/Component/HttpFoundation/Session/SessionTest.php
index a7f91692ea..20f5079150 100644
--- a/tests/Symfony/Tests/Component/HttpFoundation/Session/SessionTest.php
+++ b/tests/Symfony/Tests/Component/HttpFoundation/Session/SessionTest.php
@@ -139,29 +139,6 @@ class SessionTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals(333, $this->session->get('migrate'));
     }
 
-    public function testSerialize()
-    {
-        $compare = serialize($this->storage);
-
-        $this->assertSame($compare, $this->session->serialize());
-
-        $this->session->unserialize($compare);
-
-        $_storage = new \ReflectionProperty(get_class($this->session), 'storage');
-        $_storage->setAccessible(true);
-
-        $this->assertEquals($_storage->getValue($this->session), $this->storage, 'storage match');
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     */
-    public function testUnserializeException()
-    {
-        $serialized = serialize(new \ArrayObject());
-        $this->session->unserialize($serialized);
-    }
-
     public function testGetId()
     {
         $this->assertEquals('', $this->session->getId());