diff --git a/tests/logger/FileLoggerTest.php b/tests/logger/FileLoggerTest.php
index e05f0be..9f65fd8 100644
--- a/tests/logger/FileLoggerTest.php
+++ b/tests/logger/FileLoggerTest.php
@@ -48,6 +48,9 @@ class FileLoggerTest extends PHPUnit_Framework_TestCase
         $this->assertInstanceOf('FileLogger', $logger);
     }
 
+    /**
+     * @runInSeparateProcess
+     */
     public function testCannotWrite()
     {
         if (!defined('DEBUG')) {