I´m following a Little tutorial by Jonathan Williamson creating a concrete barrier. Applying my texture in flat shaded mode everything looks fine. If I change to smooth shading a shadow appears along an edge acros the surface. This is true for solid shading as well. Any way of getting rid of that, or better, why is this happening? I´ll add a screenshot. I don´t want to increase the polycount.
THX in advance for any help.