diff --git a/README.md b/README.md
index 89185a4..cab0dbf 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,6 @@
 JSONRPCKit is a [JSON-RPC 2.0](http://www.jsonrpc.org/specification) library purely written in Swift. This library is highly inspired by [APIKit](https://github.com/ishkawa/APIKit).
 
 ## ToDo
-- support Error Object
 - add Tests
 - add JSONRPCHTTPClient
 - add Local JSON-RPC 2.0 Server