Nic Ciardini has been hit with a seven game ban which will rule him out until the middle of next month.
The Haws attacking-midfielder was sent off in consecutive games against Sutton United and Concord Rangers.
His lengthy absence will be a big blow to the Hawks’ play-off ambitions.
Manager Lee Bradbury’s appeal against Ciardini’s straight red card proved unsuccessful.
The combative midfielder has been sent off three times this season, having already been dismissed in an FA Cup game at Canvey Island.
Bradbury will aim to sign a temporary replacement.