The 'Mrs Doubtfire' star died of an apparent suicide at his home in Paradise Cay, California in August. He was 63.
The actor had been working on 'A Merry Friggin' Christmas' shortly before his death and director Tristram Shapeero has changed the planned ending in order to honour the screen icon, reported New York Daily News.
"We talked to the production company and we said, 'We need to recut it, we need to restore it. We need to do some work to make it a fitting tribute to Robin," Shapeero said.