Slovenia’s nominee to join the next European Commission will be responsible for transport policy.
Violeta Bulc was handed the portfolio on Wednesday after a reshuffle of responsibilities.
It means that Slovakia’s Maros Sefcovic will take over the reins of the EU’s push to create a bloc-wide energy union.
The move follows a row between MEPs and the next Commission over Slovenia’s former prime minister Alenka Bratusek.
She had effectively nominated herself by placing her name on a shortlist at a time when EU officials wanted more female candidates.
The EU executive will be led by Commission president designate Jean Claude Juncker.
More hearings are expected before MEPs vote on the whole Commission on October 22.
Juncker is supposed to take up his post on November 1st.