diff --git a/src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php b/src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php
index 705e762..78960a2 100644
--- a/src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php
+++ b/src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php
@@ -550,7 +550,7 @@ class HttpCache implements HttpKernelInterface
      */
     private function restoreResponseBody(Request $request, Response $response)
     {
-        if ('head' === strtolower($request->getMethod())) {
+        if ('head' === strtolower($request->getMethod()) || 304 == $response->getStatusCode()) {
             $response->setContent('');
             $response->headers->remove('X-Body-Eval');
             $response->headers->remove('X-Body-File');