An ultrasonic surgical instrument is disclosed including an end effector and a handle assembly. The end effector includes an ultrasonic blade and a clamp arm movable relative to the ultrasonic blade between an open position and a closed position. The handle assembly includes a handle comprising a pivot pin, a trigger pivotable relative to the handle about the pivot pin, and a yoke operably coupled to the trigger. The yoke is longitudinally movable between a proximal position and a distal position based on pivotable movement of the trigger relative to the handle. The yoke defines an opening. The pivot pin extends into the opening. The opening defines an actuator travel stop configured to contact the pivot pin to prevent overtravel of the trigger.