Fans have urged the Welsh and Scottish Rugby Union to donate a percentage of the Wales v Scotland profits to the My Name'5 Doddie Foundation threatening to boycott the match.
The clash, which will see the two rivals play for the Doddie Weir Cup donated to raise awareness for the foundation and Motor Neurone Disease at Cardiff's Principality Stadium on Saturday, is expected to net £3million (NZD$5.9 million).
The foundation was established by former Scotland international Doddie Weir, who suffers from Motor Neurone Disease, with his story warming the hearts of many in the rugby community.
However, Wales Online reported that the charity will not receive any of the profits from the match.
The decision has angered fans and broadcasters alike with some calling for a boycott of the match on social media calling the Unions to reconsider their stance.