"I don't think there's anything wrong with his captaincy. The last 10 years India's management have been more sensible. I hope they don't make an irrational decision," Kapil was quoted as saying in an interview to BBC Sport.
Kapil also did not agree with the suggestion of former skipper Bishan Bedi that Ganguly should be dumped and a new captain appointed.
"Bishan played good enough cricket so he can give his opinion. I may not 100% agree that if you lose a Test you sack everybody and if you win you make a prime minister of somebody," he explained.
The Indian stalwart said that he was disappointed with Ganguly's performance in the series but conceded that Ganguly has to take the credit for building the team over the years.
"You have to rationalise what is best for the team. I am disappointed about Ganguly's performances but he built the team and put it right on top. Rahul Dravid is the only one who can [take over as skipper] but he's doing so well with the bat we can only disturb him, " BBC Sport quoted.