Steven Schumacher's late header earned Bury a hard-fought point against in-form Chesterfield.
Former Bury loanee Nicky Ajose turned in Alex Mendy's low cross from six yards to give the visitors the lead.
Chesterfield nearly doubled their lead, Mark Hughes heading Jack Lester's strike off the line before Cameron Belford parried Mendy's shot.
But the Shakers grabbed a point when captain Schumacher headed home after Joe Skarz hooked the ball into the box.
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Bury manager Richie Barker told BBC Radio Manchester:
"From our point of view a performance of two halves. I thought we were pretty poor in the first but excellent in the second.
"It was a good point for us but I thought we should have won the game.
"I think the fact that their goalkeeper got man of the match shows that we weren't that bad.
"Nicky (Ajose) quite rightly got a good reception and I'm delighted that he got off the mark but unfortunately it's cost us three points."
Chesterfield manager John Sheridan told BBC Radio Sheffield:
"I thought we played really well, our shape and everything in the first half was really good and I think we caused them problems and possibly could have scored one or two more goals - and Tommy (Lee) has had nothing to do.
"They put us under pressure for the last 20-25 minutes, but I think that was through our own downfall.
"I don't know why for the last half an hour we got really sloppy and (started) losing our shape.
"We're just doing the wrong things, making the wrong decisions and when you lose your shape you put yourself under pressure and that's what we did."
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