Cuba’s government says it’s starting to eliminate its unique two-currency system, but it’s revealing no details about the pace or scale of the change.

President Raul Castro said this year that the communist government must scrap the system, in which the vital tourism sector uses a currency fixed at a rate roughly equivalent to the dollar. The rest of Cuba uses pesos worth about 5 cents each that cannot be directly converted into foreign currencies.

It’s meant to insulate and protect Cuba’s communist system. But because many unsubsidized goods can only be bought in the stronger convertible peso, it has created a class of more prosperous Cubans, those with access to the tourist currency.

The official publication Granma said the government would roll out the measure in stages.

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Photo Credit: A man waits for customers at his private shop, at the entrance of his home in Havana. Two currency systems create two classes of merchants and shoppers. Desmond Boyland / Reuters