diff --git a/Tests/ProcessorTest.php b/Tests/ProcessorTest.php
index 30082ba..babf44a 100644
--- a/Tests/ProcessorTest.php
+++ b/Tests/ProcessorTest.php
@@ -102,7 +102,7 @@ public function testParameterHandling($testCaseName)
                 'environment' => array(),
                 'interactive' => false,
             ),
-            (array) Yaml::parse($dataDir.'/setup.yml')
+            (array) Yaml::parse(file_get_contents($dataDir.'/setup.yml'))
         );
 
         $workingDir = sys_get_temp_dir() . '/incenteev_parameter_handler';