Currency sign changed in extra fields

[iamalive]

Hi
In the shop - virtuemart 2.0.26d on joomla 2.5.18 - whenever extra fields are added eg. for size or type, and a price for these is set, the price for the +0.00 is changed from the shop currency of Swiss Francs (Fr. ) to Euros (€) which is very confusing. See attached image.
I've looked through the database and can't find anything there, so I must assume it's hardwired somewhere. I only have two currencies defined : Swiss Francs and US Dollars and only the Swiss Francs are activated.

Where should I look for this error? Or how can I solve this problem?
Regards and thanks
David


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