Wisbech Town FC lost by a solitary goal at Desborough Town on Saturday.
Former King’s Lynn player Jason Turner struck against The Fenmen just after the break.
The Fenmen will be at home to Sleaford Town tomorrow night (Tuesday, 7.45pm) before their FA Cup home derby clash with Spalding.
Wisbech: Vince, Emmington, Stevens, Wilson, Fairweather, Millson, Baldry, Murphy, Ford, Frew, Yong. Subs: Hamilton, Buzas, Knight, Beck, Cousins.