SO much for a big reveal.

Nine MSN accidentally posted a video showing Ian 'Dicko' Dickson winning Celebrity Apprentice, 12 hours before the final airs tonight on Channel 9.

The two-minute clip, titled Celebrity Apprentice: Dicko Wins, shows host Mark Bouris naming Dickson the winner of the reality series.

It also shows Dickson giving half his $100,000 grand prize to runner-up Nathan Jolliffe's charity.

Dickson told APN is was disappointing to have the result spoiled for viewers, including his family.

"It's a bit disappointing for me. I haven't even told my daughters," he said.

"I haven't told my mum. I haven't told a soul apart from my wife, so it's just a bit of a shame."

The former record company executive is still in good spirits though, and even cracked a joke about the online gaff.

"What can you do about it really," he said.

"Someone obviously pressed the wrong button 24 hours early.

"I imagine that Mr Bouris will be making his way down to the Nine business department and telling some hapless soul that 'you're fired' today."