Terrain is reflecting grass?

Hi, I am new to Unreal Engine and I’m trying to start off with using my Unity skills to make a forest. I put a grass texture on my terrain, and now it’s reflecting it… see attachment

I have no clue why it’s reflecting like a metal. Please help!

Enter the material and add a constant node to the graph by holding “1” and clicking in the graph. Plug it to roughness slot and give it a value between 0 to 1. 1 means roughest.

Worked, thanks!