Guernsey FC lost for the third time in four games as they were thrashed 5-2 at league leaders Folkestone Invicta.
Guernsey took a 15th minute lead through a Frankie Chappell own goal, but Folkestone hit back through Jon Pilbeam on the stroke of half time.
Scott Heard put Folkestone ahead a minute after the break before Ashley Miller got the third.
Ian Draycott scored twice in a minute after an hour before Ross Allen got one back late on for Guernsey.
Guernsey last conceded five goals in an Isthmian League Division One South game when they lost 5-2 at Folkestone in March.