The veteran defender has swapped the Cottagers' relegation scrap for a promotion battle with their west London neighbours.
Fulham remain bottom of the table despite Sunday's dramatic draw at Manchester United and Hughes, who spent nearly seven years at Craven Cottage, holds no grudges after his deadline day switch and hopes they stay up.
"I don't feel I have anything to prove. I enjoyed three or four of the best years of my career there," he said.
"I felt sad to leave but I left a club I have very fond memories of. I'm hoping they get out of the situation they are in and stay up.
"If you look at the two clubs they both deserve to be in the Premier League and hopefully that will be the case."