London, Aug 31 - Hollywood funny man Robin Williams feels he could have left his fans with a valuable 'souvenir' - a performance ticket from a dead star - had he not survived his surgery for which he had to cancel his show.

The 28-year-old had to scrap his 'Weapons of Self-Destruction' stand-up tour earlier this year so he could undergo heart surgery. He's convinced some ticket holders are a little peeved he survived the operation, reports femalefirst.co.uk.

The star is now rescheduling the dates he had to cancel but fears some comedy fans will begrudge his comeback.

'I guess sometimes if you do have a ticket from someone who passed away, they keep it as a souvenir, like, 'This is a ticket for the tour he didn't make. That's the one that he ain't gonna be there for.' What a lovely memento,' he said.