  Spiral galaxies with a reported bend in the slope of gradient in the oxygen
abundances (O/H)_R23, derived with traditionally used R23 - method, were
examined. It is shown that the artificial origin of the reported bends can be
naturally explained. Two reasons that result in a false bend in the slope of
(O/H)_R23 gradient are indicated. It is concluded that at the present time
there is no example of a galaxy with an undisputable established bend in the
slope of the oxygen abundance gradient.
