Alex Wilson-Fletcher's 15-year sentence has been reduced, while his co-attacker's own appeal was rejected.
One of two men jailed for a "disturbing and shocking" sex attack on a 14-year-old boy in the toilets of a Debenhams has had his jail term cut.
Alex Wilson-Fletcher, 42, of Manchester, was originally sentenced to 15 years but that has been reduced to 13 by three judges at the Court of Appeal.
"Ringleader" Abdelkader El-Janabi, 55, was also jailed for 15 years in June over the same attack.
The former intelligence officer in Saddam Hussein's Iraqi regime appealed his sentence but the judges rejected the challenge.
The pair were found guilty by a jury at Manchester Crown Court in April of two counts of rape and two counts of sexual assault against the young victim.
El-Janabi physically raped the boy but Wilson-Fletcher was convicted of taking part in the attack.
The teenager was abducted when he went to the toilets in Manchester's Arndale Centre on a Saturday afternoon last summer.
He was then taken to the toilets of a nearby Debenhams where the attack took place.
El-Janabi and Wilson-Fletcher were tracked down after images from CCTV were circulated around the UK by police.
The defendant who physically raped the boy was El-Janabi, but Wilson-Fletcher was convicted of taking part in a joint enterprise.
When sentencing the pair in June Judge Michael Leeming told Wilson-Fletcher he was "at least a look-out" and encouraged the other defendant.
His sentence was cut by Lord Justice Davis, Mr Justice Nicol and the Recorder of Chester, Judge Elgan Edwards as both men watched the proceedings via video-link from prison.
Giving the decision of the court in Wilson-Fletcher's case, Mr Justice Nicol described what had happened as an "appalling" string of offences, stating that Wilson-Fletcher's role merited a severe sentence.
Describing the roles of each of the men, the judge said El-Janabi was the "ringleader" and it was he who "took the physical part in the counts of rape, not Wilson-Fletcher".
The judge said the court considered that while Wilson-Fletcher deserved a "condign" sentence, "his crimes did not merit one that was as long" as El-Janabi's.
Dismissing the appeal by El-Janabi, Mr Justice Nicol said the court was satisfied that the sentence imposed in his case was "amply justified".