Porsche's 911 RSR has been handed a performance break ahead of Saturday's Le Mans 24 Hours.
The Porsche will run eight kilograms lighter than in practice and qualifying after a late change in the GTE Pro Balance of Performance.
The change comes after the two factory-run Porsches ended up seventh and 13th in class after qualifying for the double-points round of the FIA World Endurance Championship.
Michael Christensen's best time for Porsche was a 3m51.847s, which was almost exactly a second slower than the pole-winning Aston Martin.
The two Porsches will now run at a 1250kg minimum weight.
There have been no other changes to the BoP for the race, but Chevrolet's Corvette C7.R was given a smaller-diameter air-restrictor after the pre-race Le Mans test.
Last year, there was a wave of changes in the Le Mans BoP ahead of the race after Ford and Ferrari dominated in qualifying.