diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index e686dab3786a0..ca9fad5957ba1 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -528,9 +528,7 @@ protected function initializeContainer()
             is_dir($cacheDir) ?: mkdir($cacheDir, 0777, true);
 
             if ($lock = fopen($cachePath.'.lock', 'w')) {
-                flock($lock, \LOCK_EX | \LOCK_NB, $wouldBlock);
-
-                if (!flock($lock, $wouldBlock ? \LOCK_SH : \LOCK_EX)) {
+                if (!flock($lock, \LOCK_EX | \LOCK_NB, $wouldBlock) && !flock($lock, $wouldBlock ? \LOCK_SH : \LOCK_EX)) {
                     fclose($lock);
                     $lock = null;
                 } elseif (!is_file($cachePath) || !\is_object($this->container = include $cachePath)) {