Leinster's hopes of an opening Champions Cup away win against Racing 92 have been boosted by the fixture moving to Le Havre's ground on Saturday, December 10.
The beaten European finalists last season will face their French rivals at the 25,000 capacity Océane stadium due to a concert by French rapper Orelsan going ahead at Racing's Arena home in Paris.
It is only the second time in Racing's history that they have played a home game in Le Havre - they beat Grenoble 34-29 in the first, in March 2015 - and that may play in Leinster's favour.