diff --git a/subsys/bluetooth/host/conn.c b/subsys/bluetooth/host/conn.c
index 6f0a415d537..cc12c540051 100644
--- a/subsys/bluetooth/host/conn.c
+++ b/subsys/bluetooth/host/conn.c
@@ -957,7 +957,7 @@ static struct net_buf *create_frag(struct bt_conn *conn, struct net_buf *buf)
 
 	frag_len = min(conn_mtu(conn), net_buf_tailroom(frag));
 
-	memcpy(frag, buf->data, frag_len);
+	net_buf_add_mem(frag, buf->data, frag_len);
 	net_buf_pull(buf, frag_len);
 
 	return frag;