Simple texture request

[Haleth]

Hello.

I'm struggling with a WoW icon I want to edit. I've tried to add a 1-pixel black border to this icon:



I managed to do so alright and converted it to tga. It preserved transparency and it looked nice and crisp as well.

However, ingame, part of the border is a blurry grey. The icon is at the correct size, my UI is scaled properly and I don't have multisampling on.

Am I doing something wrong? Could someone explain it to me if they know the solution? Or feel free to do so yourself if you like.

Thanks.