Experienced keeper Joe Murphy has been signed from Huddersfield Town on an emergency loan following an injury to Tommy Lee.Lee has been ruled-out of tomorrow's play-off semi-final second leg at Preston North End after suffering an ankle injury in the first leg on Thursday night.
With Aaron Chapman and Myles Wright also out injured, the Football League gave Chesterfield special dispensation to sign a keeper on loan.
Murphy, 33, whose previous clubs include West Brom, Coventry and Scunthorpe, will take over in goal in the game at Deepdale.
Spireites boss Paul Cook said: "When we were looking for a keeper at short notice, Joe was an obvious choice. He was coached by Eric Nixon as a youngster at Tranmere and has vast experience with over 500 senior appearances under his belt. I'd like to thank Huddersfield for helping out by loaning Joe to us."
Murphy, who has two full Republic of Ireland caps, made his debut for Huddersfield in their Capital One Cup tie against the Spireites last August.