diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 7875f1a376..02c17150b4 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -120,7 +120,6 @@ class PhpDumper extends Dumper
             'debug' => true,
         ), $options);
 
-        $this->classResources = array();
         $this->initializeMethodNamesMap($options['base_class']);
 
         $this->docStar = $options['debug'] ? '*' : '';