Wrexham manager Brian Little warned his players they cannot afford any more blunders in their relegation battle.
Two goals were gifted as Wrexham lost 2-1 at Wycombe on Tuesday, a result that leaves the Dragons six points from safety albeit with three games in hand.
"It's the first time for a long time that we've been that poor," Little told BBC Sport Wales.
"But we can't afford 45 minutes like that in our position... we couldn't have given two worse goals away."
Two poor clearance kicks by Wrexham goalkeeper Gavin Ward - admittedly not helped by the powerful, gusting wind - allowed Wycombe to capitalise with two early goals.
606: DEBATE
The loss was compounded by Macclesfield's win at Dagenham & Redbridge, leaving Wrexham now six points adrift of closest targets Macclesfield and Notts County.
Little said they had not been helped by having had to play on Sunday lunchtime - a 2-0 win at Chester - and then prepare for another game so soon on Tuesday night.
"We've had some games where we haven't played overly well, but we haven't had a game we can look at and say we could work harder and be brighter," Little added.
"I'm not looking for excuses but another 24 hours would have been nice to have prepared for the game.
"But that's about the only excuse if I'm looking for excuses, which I'm not, but it was a factor.
"We shook it up at half-time, we said we've got to be brave here and try something different.
"We went to more of a 4-4-2... all in all the second-half performance was good and we were unlucky not to have got a point in the end."
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