The global financial structure remains little changed five years on from the onset of the crisis and more needs to be done, the deputy director general of the International Monetary Fund said.

"With all the debates going on, the financial structure is largely unchanged," Zhu Min said. He also warned against undue optimism that the worst of the financial crisis is behind us. "We are not safe yet," he warned.

Zhu was speaking at the World Economic Forum in the Swiss city of Davos. Financial institutions and regulators have still got much to do before the global financial system is resilient again, he said.