diff --git a/net/socket.c b/net/socket.c
index c752696cbb..b1e3b1c8d9 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -213,7 +213,7 @@ static void net_socket_send(void *opaque)
             if (s->index >= s->packet_len) {
                 s->index = 0;
                 s->state = 0;
-                if (qemu_send_packet_async(&s->nc, s->buf, size,
+                if (qemu_send_packet_async(&s->nc, s->buf, s->packet_len,
                                            net_socket_send_completed) == 0) {
                     net_socket_read_poll(s, false);
                     break;