diff --git a/src/Symfony/Component/Cache/LockRegistry.php b/src/Symfony/Component/Cache/LockRegistry.php
index 676fba5dca..9bb2bcac4a 100644
--- a/src/Symfony/Component/Cache/LockRegistry.php
+++ b/src/Symfony/Component/Cache/LockRegistry.php
@@ -90,8 +90,10 @@ final class LockRegistry
         while (true) {
             try {
                 // race to get the lock in non-blocking mode
-                if (flock($lock, LOCK_EX | LOCK_NB)) {
-                    $logger && $logger->info('Lock acquired, now computing item "{key}"', ['key' => $item->getKey()]);
+                $locked = flock($lock, LOCK_EX | LOCK_NB, $wouldBlock);
+
+                if ($locked || !$wouldBlock) {
+                    $logger && $logger->info(sprintf('Lock %s, now computing item "{key}"', $locked ? 'acquired' : 'not supported'), ['key' => $item->getKey()]);
                     self::$lockedFiles[$key] = true;
 
                     $value = $callback($item, $save);