Deutsche Bank’s Chief Investment Office head Markus Mueller has suggested that “governance” that will legitimize crypto investments could exist in “five to ten years.”

Originally speaking in an interview with Bloomberg on Monday, Jan. 29, Mueller cautioned against current investment in cryptocurrency as only for those “who invest speculatively” while appealing for businesses in the sphere to work together with regulators.

“Once security and the corresponding trust have been created, cryptocurrencies can be assessed and evaluated like established asset classes,” he forecast.

“It’s possible that the required governance will be in existence in five to ten years.”

Deutsche Bank has traditionally taken a bearish view on cryptocurrencies as prices rise, cautioning in December that a major fall in Bitcoin was being “discounted as a small issue” by financial markets.

The lack of volatility in traditional stocks was driving investor interest in more risky assets such as Bitcoin, fellow Deutsche Bank analyst Masao Muraki determined in a note mid-January.

“Now, a growing number of institutional investors are watching cryptocurrencies as the frontier of risk-taking to evaluate the sustainability of asset prices,” he wrote.

Germany continues to fall behind in its treatment of cryptocurrencies at consumer level, providing a stark contrast to initiatives in other countries, such as neighboring Switzerland.

Earlier this month, the country’s central bank director nonetheless precluded comments from UK and US lawmakers at the World Economic Forum 2018 that regulation of cryptocurrency should be a joint international effort.