Vincent Klyn said that because of the low budget of the film that only two pairs of contact lenses were made for his character. He had lost the first pair in an unspecified early scene, and while filming the final fight scene he thought he had lost the other. Filming had to immediately stop while the crew tried to find them, which allowed Klyn to return to his dressing trailer. There he discovered that the lenses had actually shifted up above his eyes from all the smoke, dirt, and high winds of the final scene being filmed that was causing him to blink uncontrollably. By blinking again in his trailer he was able to move the lenses back down, and filming resumed.
