Languages of Montenegro are languages that are spoken in Montenegro. According to the Constitution of Montenegro, adopted in 2007, Montenegro has only one official language, specified as Montenegrin. However, at the 2011 census, 42% of the population declared Serbian to be their native language, while Montenegrin was the second most common at 37%. These are both different standardized varieties of the former Serbo-Croatian language, alongside Bosnian and Croatian. However, an official standard for Montenegrin is still in the process of being formulated. The Montenegrin language is written in Latin and Cyrillic alphabets, but there is a growing political movement to use only the Latin alphabet.