diff --git a/src/Symfony/Component/Cache/Tests/Adapter/ApcuAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/ApcuAdapterTest.php
index 6fc69f99b1..aa2b170f4b 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/ApcuAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/ApcuAdapterTest.php
@@ -24,6 +24,9 @@ class ApcuAdapterTest extends CachePoolTest
         if (!function_exists('apcu_fetch') || !ini_get('apc.enabled') || ('cli' === PHP_SAPI && !ini_get('apc.enable_cli'))) {
             $this->markTestSkipped('APCu extension is required.');
         }
+        if ('\\' === DIRECTORY_SEPARATOR) {
+            $this->markTestSkipped('Fails transiently on Windows.');
+        }
 
         return new ApcuAdapter(__CLASS__);
     }