Dover Athletic and Chelmsford City must do it all again at Crabble on Tuesday night after drawing 1-1 in Saturday's FA Trophy third qualifying round tie in Essex.
Manager Nicky Forster made one change to the starting line-up who had been 3-0 winners at Eastbourne Borough the previous weekend, with Jamie Smith preferred to Barry Cogan on the left wing.
Chelmsford started the brighter and should have taken the lead on 29 minutes when they were awarded a penalty after Danny Webb obstructed Jamie Slabber with his arm but Dave Rainsford fired his spot kick against the bar.
And Whites took the lead against the run of play shortly before half-time when Ben May's shot was saved by Stuart Searle but Ricky Modeste (pictured) pounced on the rebound to score his first goal for Dover against his former club.
The opening stages of the second half were more evenly balanced but Chelmsford finally scored the goal their efforts deserved on 66 minutes when captain Kenny Clark bundled the ball home.
Billy Bricknell had the chance to regain Dover's lead after finding himself in space but the substitute scuffed his shot straight into Searle's hands.
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