diff --git a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
index 4c8f89cd3f204..99f07e70eb2a2 100644
--- a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
+++ b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
@@ -139,7 +139,7 @@ private function generateSignature(\ReflectionClass $class)
             $defaults = $class->getDefaultProperties();
 
             foreach ($class->getProperties(\ReflectionProperty::IS_PUBLIC | \ReflectionProperty::IS_PROTECTED) as $p) {
-                yield $p->getDocComment().$p;
+                yield $p->getDocComment().$p->name;
                 yield print_r(isset($defaults[$p->name]) && !\is_object($defaults[$p->name]) ? $defaults[$p->name] : null, true);
             }
         }