A Step-By-Step Guide: Jekyll (3.0) on Netlify – Netlify

Unfortunatelly the builds have jekyll environment "development" - could anyone try to solve that for me? I already tried adding the environment in some places but without success. Places I tried: Build Cmd https://puu.sh/sQwCQ/2c3001879c.png and Build environment (this one gets deleted if I enter a key/par value of jekyll.enviroment = production or environment = production). Thanks in advance!