A recent judgment of the Supreme Court (decision no. 18707 of 22 September 2015, Italian text available here) dealt with a very peculiar case. A party objected that an arbitration clause was unenforceable, since it included an additional preposition (more precisely the preposition “di”, which in Italian means "of").
In this case, the Supreme Court, as well as the Court of first instance, avoided a formalistic excess. The Court did not repeat the old case, referred to by Gaius, in which a party lost the case due to a lexical mistake.