Section 18-8-509 - Perjury and false swearing - irregularities no defense(1) It is no defense to a prosecution under sections 18-8-502 to 18-8-504 that: (a) The defendant was not competent, for reasons other than mental disability or immaturity, to make the false statement alleged;(b) The statement was inadmissible under the law of evidence;(c) The oath was administered or taken in an irregular manner; or(d) The person administering the oath lacked authority to do so, if the taking of the oath was required by law.L. 71: R&RE, p. 464, § 1. C.R.S. 1963: § 40-8-509.