Millimeter dust polarization from a disk around massive

In this talk we present ALMA 1.1 mm polarimetric observations of the dusty disk around a massive young stellar object with an angular resolution of 30mas (50 AU). The dust emission shows a polarization level of about 1-2%. The disk is well resolved by the observations, which allows to resolve well the dust polarization pattern. This pattern suggests that the polarization arises from dust scattering rather than from dust grains aligned from the magnetic fields. We will discuss the comparison between the observations and models of dust scattering