The Hawks will now play Dagenham & Redbridge in the opening fixture, with the visit to Cheshunt switching to Tuesday 12th July.
There will also be no game against Bishop's Stortford, who are currently without a manager after Rod Stringer's move to Chelmsford.
The current pre-season friendly schedule is as follows.
Sat 9th July: Home vs Dagenham & Redbridge FC
Tue 12th July: Away vs Cheshunt FC
Sat 16th July: TBC
Tue 19th July: Home vs Enfield 1893 FC
Sat 23rd July: Away vs Newmarket Town FC
Tue 26th July: Away vs Ware FC
Sat 30th July: Away vs East Thurrock United FC
Tue 2nd August: Away vs VCD Athletic FC
Sat 6th August: TBC
The league campaign will then begin on Saturday 13th August, with fixtures expected in mid-July.
As always, pre-season fixtures are subject to change. Follow the latest changes on the website.