Samoan bad boy George Pisi will have to serve his full six-week ban, after his appeal was dismissed on Thursday.
Pisi was cited for a dangerous tackle under law 10.4(e) in the match between Ireland and Samoa on November 9.
At a hearing, on November 12, before a disciplinary committee, the terms of the citing complaint had been amended to a 'tip' tackle under law 10.4(j).
Following Pisi's guilty plea to that amended complaint, the disciplinary committee upheld the citing and suspended the player for a period of six weeks.
The appeal committee, chaired by Lorne Crerar (Scotland) and siisted by Julien Berenger (France) and Mike Hamlin (England), listened to representations on behalf of the player and the disciplinary officer.
The appeal committee dismissed the appeal and upheld the original decision of the disciplinary committee.
Pisi is free to play again on December 23.