Phased-folded light curves of the MACHO RRLs classified as EBs by the UPSILoN classifier. They show EB-like variability, implying that the MACHO classification might be incorrect. m_V is the Johnson V-band magnitude derived from the MACHO magnitude using the conversion equation from Kunder & Chaboyer (2008). In each panel we show the periods of the light curves obtained from the Lomb-Scargle algorithm. We used twice these periods to plot the phase-folded light curves, because Lomb-Scargle occasionally returns half of the true period for EB-like variability.