diff --git a/vlib/net/tcp_simple_client_server_test.v b/vlib/net/tcp_simple_client_server_test.v
index b8395ef3f7..4936b2cc5a 100644
--- a/vlib/net/tcp_simple_client_server_test.v
+++ b/vlib/net/tcp_simple_client_server_test.v
@@ -66,7 +66,7 @@ fn test_socket_write_and_read() {
 	mut server, mut client, mut socket := setup()
 	addr := socket.peer_addr()!
 	ip := socket.peer_ip()!
-	assert ip in ['::1', 'localhost', '127.0.0.1']
+	assert ip in ['::1', 'localhost', '127.0.0.1', '::ffff:127.0.0.1']
 	println('> ip: ${ip} | addr: ${addr}')
 	defer {
 		cleanup(mut server, mut client, mut socket)