West Shepton will host one of its biggest games for several years on Saturday when Blackfield & Langley visit for an FA Vase third round tie.
Shepton Mallet thought their Vase hopes were over when they lost 3-1 at home to AFC Portchester on November 16.
However, the visitors were found to have played an ineligible player in the match, with full-back Josh Maddison having represented a local club while in Australia two years ago but not received international clearance on his return.
Portchester hit out at the decision, saying in a statement: "We have been subject to a historic technicality, going back to 2011-2012, concerning a player who has been registered at our club since 2007-2008.
"We feel the decision is totally unfair as our club had no communication at any time with any other governing body."
However, the decision stood and a place in the last 32 of the Vase is now on offer for the winners of this weekend's tie between Shepton and their Wessex League opponents, which kicks off at 3pm.