diff --git a/src/Symfony/Component/Config/Resource/FileResource.php b/src/Symfony/Component/Config/Resource/FileResource.php
index 86618f63d1..07564a3470 100644
--- a/src/Symfony/Component/Config/Resource/FileResource.php
+++ b/src/Symfony/Component/Config/Resource/FileResource.php
@@ -87,7 +87,7 @@ class FileResource implements ResourceInterface
      */
     public function exists()
     {
-        return file_exists($this->resource);
+        return is_file($this->resource);
     }
 
     /**