diff --git a/flextype/twig/FilesystemTwigExtension.php b/flextype/twig/FilesystemTwigExtension.php
index 4f1618c3..54f67e3d 100644
--- a/flextype/twig/FilesystemTwigExtension.php
+++ b/flextype/twig/FilesystemTwigExtension.php
@@ -29,12 +29,12 @@ class FilesystemTwigExtension extends \Twig_Extension
         ];
     }
 
-    public function has($path)
+    public function filesystem_has($path)
     {
         return Filesystem::has($path);
     }
 
-    public function read($path)
+    public function filesystem_read($path)
     {
         return Filesystem::read($path);
     }