Barry Smith insists Aldershot Town's victory at home to Chester FC in January shouldn't be used as a marker for Tuesday's return fixture (7.45pm).
On that occasion the Blues suffered a 3-1 defeat at the Recreation Ground after conceding twice in the first five minutes of the second-half, although the outcome could have been different had Craig Mahon not had a stonewall penalty turned down.
Referee Brett Huxtable was at fault for that but not for soft defending that allowed Sean McGinty and Alfie Pavey to put the Hampshire side in charge.
John Rooney gave Chester hope with 12 minutes to go but with Steve Burr's men chasing an equaliser, Jim Stevenson struck on the counter to seal the win.
Since then the Shots, who are five points and three places better off in the table, have won three from six in the league since then but lost 2-0 at Lincoln City on the weekend and Smith won't be giving too much weight to what happened when the sides last faced each other.
"It's a different game, we know how we hurt them in that game and we'll look to do similar things but it's about making sure we turn up on the night and make sure we do our jobs correctly," Smith, who was disappointed with his side's performance against Lincoln, told the club's official website.
"We've got to make sure we do our jobs properly because if we don't and we're not at it then we're not good enough to get away with two or three players playing at top level so we have to make sure that every player that's selected is right up for it and we take the game to Chester
"Lincoln played the way they played, we knew what to expect from them and we didn't play well enough.
"We didn't handle the physicality of the game well enough and that's what's disappointing the fact that we're better than what we showed on Saturday.
"We'll put it down to that but there's a great chance on Tuesday to show that it was a bad day of the office and we'll go up to Chester and look to take three points."
Aldershot are expected to be without midfielder Damon Lathrope and forward Charlie Walker for the trip to the Lookers Vauxhall Stadium but have added experience striker Ross Lafayette on loan from Eastleigh since the previous meeting with the Blues.
Smith has urged those players to have come into the team in recent weeks to given him a selection headache.
He said: "There is competition for places but we are running with a small squad and a couple of injuries does make a difference to us because players then begin to think they're playing week in, week out.
"It's up to the players who get the jersey to make sure they play well enough to stay in the term but I'd also like more competition if those boys are going to be out long-term."