Chesterfield have signed goalkeeper Joe Murphy on loan from Huddersfield, ahead of Sunday's League One play-off semi-final second leg at Preston North End.
The Spireites' regular number one Tommy Lee suffered an ankle injury in Thursday's 1-0 first-leg defeat.
And with Aaron Chapman and Myles Wright also out, Chesterfield have been given special dispensation to sign a keeper.
Chesterfield must overturn a one-goal deficit at Deepdale if they are to reach the final at Wembley on 24 May.
Speaking to the club website about the signing of 33-year-old Murphy, manager Paul Cook said: "When we were looking for a keeper at short notice, Joe was an obvious choice.
"He has vast experience with over 500 senior appearances under his belt."