We describe a new technique to correct inadvertent conjunctival filtering blebs. This method creates a partial-thickness scleral flap to seal the region of the excised fistula. Closure of this flap with sutures permanently covers the fistula and eliminates any route for recurrence of the bleb or downgrowth of epithelium. No complications have been associated with this procedure, which has been used in more than 10 cases during the last 3 years.