OXFORD City will face Dulwich Hamlet or Chippenham Town in the first round of the Buildbase FA Trophy if they can get past Hornchurch.
The winners of tomorrow's third qualifying round replay were drawn at home in this lunchtime's draw.
Chippenham and Dulwich will also play again tomorrow night, after Saturday's game in south London ended 2-2.
The first round ties are set to take place on Saturday, December 14.
City were held to a 1-1 draw by their Isthmian Premier Division opponents at Court Place Farm on Saturday.
Nana Owusu put the hosts ahead after 14 minutes, before Hornchurch's Rickie Hayles levelled.
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