The present invention includes a system, method, and apparatus for preventing corrosion in a lap joint. The lap joint includes a first member and a second member. The first member is adjacent to the second member to form a lap seam of the lap joint. The first member forms a channel at the lap seam relative to the second member. The channel forms a “V” shape, a “U” shape, or a semicircle shape relative to a horizontal plane of the lap joint. One or more openings are formed on the first member and/or the second member. The openings and channel of the present invention allows anticorrosion material to coat the lap seam of the lap joint.