Celtic bagged their third Scottish title in four years thanks to a single strike by Stilian Petrov in their away match against Kilmarnock.
The 1-0 win leaves them 16 points ahead of nearest rivals Rangers, who can win only a further 15.
Kilmarnock might have taken the lead but Kris Boyd's goal was ruled out for a foul on Bobo Balde.
Stanislav Varga hit the post and the Killie goalie saved from Petrov's feet before Celtic finally found the net.
Petrov converted from a neat flick from Henrik Larsson and Celtic held on to clinch the title.
"I'm delighted we've finally won it," Celtic manager Martin
"The players had a great inner determination and in this particular year we were the best team."