Let H be the orthocenter, O the circumcenter, HaHbHc the circumcevian triangle of H, MaMbMc the circumcevian triangle of O. Let Qa, Qb, Qc be the circumcenters of OMbMc, OMcMa, OMaMb. The triangles QaQbQc, HaHbHc are homothetic, with center in the Euler line.