Initially, the ECB and the European Commission insisted that Bulgaria change the name it uses for the currency from ЕВРО to ЕУРО, claiming the currency should have an official and standard spelling across the EU. Bulgaria on the other hand stated that it wants to take into account the different alphabet and the principle of phonetic orthography in the Bulgarian language. The issue was decisively resolved in favour of Bulgaria at the 2007 EU Summit in Lisbon, allowing Bulgaria to use the Cyrillic spelling евро on all official EU documents. As of 13 December 2007, all EU institutions – including the ECB – use ЕВРО as the official Bulgarian transliteration of the single European currency.