diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
index 4376f1ead341..df7261bd5376 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
@@ -12,6 +12,7 @@
 namespace Symfony\Bundle\FrameworkBundle\CacheWarmer;
 
 use Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerInterface;
+use Symfony\Component\HttpKernel\CacheWarmer\WarmableInterface;
 use Symfony\Component\Routing\RouterInterface;
 
 /**
diff --git a/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php b/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
index 1fd3aef0fc54..230a760f2975 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
@@ -15,7 +15,7 @@
 use Symfony\Component\Routing\RequestContext;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\Routing\RouteCollection;
-use Symfony\Bundle\FrameworkBundle\CacheWarmer\WarmableInterface;
+use Symfony\Component\HttpKernel\CacheWarmer\WarmableInterface;
 
 /**
  * This Router only creates the Loader only when the cache is empty.
diff --git a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerInterface.php b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerInterface.php
index 58ddb83fc9b5..e4251c78b588 100644
--- a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerInterface.php
+++ b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerInterface.php
@@ -15,15 +15,8 @@
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
-interface CacheWarmerInterface
+interface CacheWarmerInterface extends WarmableInterface
 {
-    /**
-     * Warms up the cache.
-     *
-     * @param string $cacheDir The cache directory
-     */
-    function warmUp($cacheDir);
-
     /**
      * Checks whether this warmer is optional or not.
      *
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/WarmableInterface.php b/src/Symfony/Component/HttpKernel/CacheWarmer/WarmableInterface.php
similarity index 80%
rename from src/Symfony/Bundle/FrameworkBundle/CacheWarmer/WarmableInterface.php
rename to src/Symfony/Component/HttpKernel/CacheWarmer/WarmableInterface.php
index 4e2120c9fbc0..0476161621c5 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/WarmableInterface.php
+++ b/src/Symfony/Component/HttpKernel/CacheWarmer/WarmableInterface.php
@@ -9,10 +9,10 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Bundle\FrameworkBundle\CacheWarmer;
+namespace Symfony\Component\HttpKernel\CacheWarmer;
 
 /**
- * Interface for services that support warming their cache.
+ * Interface for classes that support warming their cache.
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */