Marginal note:Idem

(5) It is not a defence to a charge under section 153, 170, 171 or 172 or subsection 286.1(2), 286.2(2) or 286.3(2) that the accused believed that the complainant was 18 years of age or more at the time the offence is alleged to have been committed unless the accused took all reasonable steps to ascertain the age of the complainant.