Jakarta: The Turnbull government has pushed back at Indonesia, saying it was unnecessary to renegotiate the maritime boundary between the two countries, a day after a senior official in Jakarta flagged the possibility.

Foreign Minister Julie Bishop told Fairfax Media on Thursday that Australia did not "believe that the conclusion of permanent boundaries between Australia and Timor-Leste requires Australia to renegotiate boundaries with Indonesia".

"We have a settled understanding of boundaries with Indonesia which has served both countries well for several decades," she said.

"During the conciliation with Timor-Leste, we have kept the interests of Indonesia in mind and have briefed Indonesia on the terms of the treaty between Australia and Timor-Leste."

The Foreign Minister's comments come a day after Indonesia's director-general of legal affairs and international treaties, Damos Agusman, told Fairfax Media "the Perth treaty cannot enter into force as it stands now as it, inter alia, covers area that now belongs to TL [East Timor], and the object of the conciliation".