Recently,Sun et al.published new Galactic 3D-models of magnetic fieldsin the disk and halo of the Milky Way and the distribution of cosmic-ray electron densityby taking into account the thermal electron density model NE2001 by Cordes &Lazio.The models successfully reproduce observed continuum and polarization all-sky maps and the distribution of rotation measures of extragalactic sources across thesky.However,the model parameters obtained for the Galactic halo,although reproducingthe observations,seem physically unreasonable:the magnetic field needs to be significantly stronger in the Galactic halo than in the plane and the cosmic-ray distributionmust be truncated at about 1 kpc to avoid excessive synchrotron emission fromthe halo.The reason for these unrealistic parameters was the low scale-height of thewarm thermal gas of about 1 kpc adopted in the NE2001 model.However,this scaleheight seemed reasonable and was well studied by numerous investigations.Recently,the scale-height of the warm gas in the Galaxy was revised by Gaensler et al.to about1.8 kpc,by showing that the 1 kpc scale-height results from a systematic bias in theanalysis of pulsar data.This implies a higher thermal electron density in the Galactichalo,which in turn reduces the halo magnetic field strength to account for the observedrotation measures of extragalactic sources.We slightly modified the NE2001 modelaccording to the new scale-height and revised the Sun et al.model parameters accordingly:the strength of the regular halo magnetic field is now 2 μG or lower,and the physically unrealistic cutoff in z for the cosmic-ray electron density is removed.Thesimulations based on the revised 3D-models reproduce all-sky observations as before.