diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 89a1ab52f7..46440a3468 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -85,6 +85,7 @@ abstract class Kernel implements KernelInterface, TerminableInterface
         $this->rootDir = $this->getRootDir();
         $this->name = $this->getName();
         $this->classes = array();
+        $this->bundles = array();
 
         if ($this->debug) {
             $this->startTime = microtime(true);