Comparison of the corrected spectrum of SDSS J1630+3119 bump reddening (sky blue curve) and observed spectra of SDSS J1630+3119 and J1440+3710. The corrected spectrum agrees very well with the observed spectrum of SDSS J1440+3710 (also shown in Fig. 2 by the green curve), and both spectra follow the reddened quasar composite (red curve) by the SMC extinction curve of E(B − V) = 0.46 very well. The continuum difference between SDSS J1630+3119 and SDSS J1440+3710 is probably the 2175 Å bump feature.