diff --git a/binding/binding.go b/binding/binding.go
index 8730bb47..31f1c719 100644
--- a/binding/binding.go
+++ b/binding/binding.go
@@ -31,7 +31,7 @@ var (
 	XML           = xmlBinding{}
 	JSON          = jsonBinding{}
 	Form          = formBinding{}
-	MultipartForm = MultipartFormBinding{}
+	MultipartForm = multipartFormBinding{}
 )
 
 func Default(method, contentType string) Binding {