  The reported nightly mean value of the circular polarization of optical
emission observed from the close binary system AE Aqr is 0.06% (+-) 0.01%. We
discuss a possibility that the observed polarized radiation is emitted mainly
by the white dwarf or its vicinity. We demonstrate that this hypothesis is
rather unlikely since the contribution of the white dwarf to the optical
radiation of the system is too small. This indicates that the polarimetric data
on AE Aqr cannot be used for the evaluation of the surface magnetic field
strength of the white dwarf in this system.
