AFC Telford are now all but out of the play-off race after a disappointing display at home to Gloucester.
The visitors took the lead after just 13 minutes through Tim Harris after Telford failed to clear a free-kick.
Adam Dugdale had the best chance for the Bucks, but the centre-back saw his header come back off the bar.
Telford are ninth in the league and must now win their remaining three games in Blue Square North to have any chance of making the play-offs.
Manager Rob Smith told BBC Radio Shropshire: "It was a flat, lifeless, end-of-season performance where it looked like some players were already on their summer holidays.
"If I'm here next season, the players are playing for their futures.
"How I'm going to keep some of them on if I stay here next season after that?"
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