Dundalk have been awarded the points from their meeting with Sligo Rovers last month after the FAI concluded that the Bit o' Red fielded an ineligible player in the fixture.
Adam McDonnell was suspended for the game but played in a 2-0 victory for the hosts at The Showgrounds.
It means that the Lilywhites are given the points in a 3-0 victory which sees them move up to second place in the SSE Airtricity League table, and close the gap on leaders Shamrock Rovers to three points.
For Sligo, it's a big blow to their European ambitions as they fall seven points behind fourth placed St Patrick's Athletic, having already been knocked out of the Extra.ie FAI Cup by First Division side Wexford FC.