Need help with shadow.

Hi! I’m new here and not very experienced in Blender, I only know enough to do some basic things. So, I’m going to keep this short:


See that faint little shadow inside the red line? That’s my problem. It’s faint now, but it can get pretty noticeable depending on the lighting I use and that’s very inconvenient. Is there any way to get rid of it? I’m working with the internal renderer.