diff --git a/examples/tcp_echo_server.v b/examples/tcp_echo_server.v
index eda4b5a..8cc6269 100644
--- a/examples/tcp_echo_server.v
+++ b/examples/tcp_echo_server.v
@@ -1,5 +1,4 @@
 import netio
-import netio.protocol
 
 fn main() {
 	// This is only for examples_test.v
@@ -9,8 +8,10 @@ fn main() {
 	listen_addr := netio.SocketAddr.new_ipv4([..]u8[127, 0, 0, 1], 1088)
 
 	// Create server socket.
-	socket := netio.Socket.new(netio.af_inet, netio.sock_stream,
-		protocol.protocol_by_name('tcp')!.number)!
+	socket := netio.Socket.new(netio.af_inet, netio.sock_stream, 0) or {
+		eprintln('SOCKET: ${err}')
+		exit(1)
+	}
 
 	// Close server socket on exit.
 	defer {