- return sptps_start(&c->sptps, c, false, false, mesh->invitation_key, c->ecdsa, "meshlink invitation", 15, send_meta_sptps, receive_invitation_sptps);
+ static const char label[] = "MeshLink invitation";
+
+ return sptps_start(&c->sptps, c, false, false, mesh->invitation_key, c->ecdsa, label, sizeof label - 1, send_meta_sptps, receive_invitation_sptps);