diff --git a/test/rctest.c b/test/rctest.c
index f82d2cc..2dd54de 100644
--- a/test/rctest.c
+++ b/test/rctest.c
@@ -536,8 +536,9 @@ static void do_send(int sk)
 
 	seq = 0;
 	while ((num_frames == -1) || (num_frames-- > 0)) {
-		*(uint32_t *) buf = htobl(seq);
-		*(uint16_t *) (buf + 4) = htobs(data_size);
+		bt_put_le32(seq, buf);
+		bt_put_le16(data_size, buf + 4);
+
 		seq++;
 
 		if (send(sk, buf, data_size, 0) <= 0) {