September 13, 2014 4:43 PM EDT

Scotch whisky makers are worried about the vote for Scottish independence on September 18.

The Scotch Whisky Association explained how a vote for independence is concerning because it is currently unclear which currency Scotland will use and what an independent Scotland might mean for access to foreign markets. Currency confusion could lower sales, putting the important industry in a tailspin, along with the rest of the economy.

As the country’s second-largest export, Scotch comprises one fourth of all of Scotland’s food and drink exports. Some 40 bottles are shipped out of the country every second, according to CNN Money. The Scotch Whisky Association also stated that 35,000 people make their living off of Scotch production.

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