Rotation curves of zC-400569 at z ≃ 2.24 (red dots) and zC-488879 at z ≃ 1.47 (orange stars) are compared with those of disk galaxies at z ≃ 0 from the SPARC database (Lelli et al. 2016a). The latter ones are color-coded by the mean stellar surface density within the effective radius. Rotation curves at z ≃ 0 are much more extended than those at high z thanks to the availability of H I observations.