Uganda is to bring in an international firm of auditors, Ernst and Young, to temporarily oversee the management of funds for fighting Aids.
Uganda's successful Aids programme has run into controversy
This follows the suspension of donor money amid accusations of financial mismanagement.
Last week, the Global Fund to Fight Aids, Tuberculosis and Malaria halted more than $150m of its grant to Uganda.
Uganda is often held up as a model of how to fight HIV/Aids, with infection rates falling from 15 to 5%.
The announcement that auditors Ernst and Young have been engaged follows a meeting between Health Minister Jim Muhwezi, and the Global Fund.
The government had set up a Project Management Unit (PMU) to deal with cash disbursed by the Global Fund, but the PMU has since been disbanded.
"We have agreed that Ernst & Young acts as the PMU to be able to go through the transition period," State Minister for Health Mike Mukula said.
The fund had said a shortfall was created when dollars were converted into Ugandan shillings by the Ministry of Health. It also quoted other accounting problems.
A sum of US$45m had already been paid.
Earlier this week Uganda's Aids programme was criticised by the UN's special envoy on fighting Aids in Africa, who said that Uganda - under pressure from the United States - was putting greater emphasis on abstinence to tackle the disease than condoms.
Ugandan denies any change in policy and the US has rejected the UN accusation.