Accidentally moving a ball at address on the tee

[cliveb]

Today I was playing a match. On a par three, I just placed my ball on the mat without a peg. As I addressed the ball, I nudged it and it moved about half an inch. I then just played it and my opponent didn't object.

But is there any rule that states I should have replaced the ball? Had it been on a tee peg of course I would have done so, but just lying on the ground I presumed there was no need since the ball was not yet in play.

 

[louise_a]

The ball is not in play until you make a stroke at it so you were fine.