  We selected three double-lined spectroscopic binary systems which have
extreme mass ratios, if measured using the Wilson method. We analysed medium
resolution spectroscopic observations and space-based photometry and find that
all these systems are not SB2, but rather triple systems and a chance alignment
of another star with SB1 that have an unseen component. Therefore suspicious
mass ratios determined by the Wilson method for some double-lined spectroscopic
binary systems aren't correct as these systems are more complex.
