Martin Allen has asked supporters to put their recent frustration to one side and help the Spireites to 'set the place alight' tomorrow in the FA Cup.
Chesterfield will welcome League Two Grimsby to the Proact and while Allen admits his side need to be better in the final third than they were on Tuesday against Bromley, he wants fans to focus instead on this one-off cup opportunity.
Victory would put Town in the third round of the competition and bring the possibility of a real glamour tie.
The Mariners are set to bring around 1,600 supporters to Derbyshire and Allen hopes his side's fans will match the noise of the visitors, while the players attempt to pick up a first Proact win since August.
He believes a home FA Cup win could be an enormous boost for everyone at the club, particularly in light of the midweek performance, which provoked boos and chants of 'Mad Dog out' from a section of the fanbase.
"They'll bring a lot of supporters over and we must make sure on off the field we match them, with energy and enthusiasm from our players and all our supporters," he said.
"Forget about all the other stuff, we've really got to park that, push it aside and step forward into the game on Sunday, give the players full backing.
"The performances have been pretty good, we need a little bit of confidence, we do need some help from the supporters and we'll turn this corner without a shadow of a doubt.
"We've shown courage, resilience, character. We need a little bit more quality in the final third and keeping clean sheets is crucial.
"The players are moving in the right direction and Sunday, in front of our fans, in the FA Cup against a team from a higher division, gives us a chance to set the place alight."