diff --git a/rpclib/rpcClient.go b/rpclib/rpc_client.go
similarity index 100%
rename from rpclib/rpcClient.go
rename to rpclib/rpc_client.go
diff --git a/rpclib/rpcServer.go b/rpclib/rpc_server.go
similarity index 99%
rename from rpclib/rpcServer.go
rename to rpclib/rpc_server.go
index cb47898c0..23abcb9bd 100644
--- a/rpclib/rpcServer.go
+++ b/rpclib/rpc_server.go
@@ -156,7 +156,7 @@ func (s *RPCServer) rpcError(w http.ResponseWriter, req *request, code int, err
 		Id:      *req.Id,
 		Error: &respError{
 			Code:    code,
-			Message: err.(error).Error(),
+			Message: err.Error(),
 		},
 	}