diff --git a/rpc/api.go b/rpc/api.go
index 20299bef1..b554dc16b 100644
--- a/rpc/api.go
+++ b/rpc/api.go
@@ -146,7 +146,8 @@ func (api *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) err
 		if err := json.Unmarshal(req.Params, &args); err != nil {
 			return err
 		}
-		*reply = api.xethAtStateNum(args.BlockNumber).CodeAt(args.Address)
+		v := api.xethAtStateNum(args.BlockNumber).CodeAtBytes(args.Address)
+		*reply = newHexData(v)
 	case "eth_sendTransaction", "eth_transact":
 		args := new(NewTxArgs)
 		if err := json.Unmarshal(req.Params, &args); err != nil {
diff --git a/xeth/xeth.go b/xeth/xeth.go
index 5936c0fb2..1b6b1ccd0 100644
--- a/xeth/xeth.go
+++ b/xeth/xeth.go
@@ -325,6 +325,10 @@ func (self *XEth) CodeAt(address string) string {
 	return common.ToHex(self.State().SafeGet(address).Code())
 }
 
+func (self *XEth) CodeAtBytes(address string) []byte {
+	return self.State().SafeGet(address).Code()
+}
+
 func (self *XEth) IsContract(address string) bool {
 	return len(self.State().SafeGet(address).Code()) > 0
 }