A man who was found guilty of abusing a child through a Catholic "Big Brother" program has won a retrial after a Queensland court found his alleged admission should not have gone before the jury.
Robert John Brock was sentenced to serve three months behind bars for the abuse of the 11-year-old boy he met through the program, run by the Catholic Welfare Bureau, in the early 1980s.
Brock appealed the conviction, attacking the evidence of the complainant and his mother as unreliable.
He also argued an alleged confession presented to the jury did not relate to the abuse and was therefore inadmissible.
The Court of Appeal on Tuesday upheld his appeal, finding the so-called admission likely unfairly influenced the jury about his guilt.
The court ordered a retrial.