wget doesn't speak english anymore

Answering myself: As Basile Starynkevitch suggested, I used the printenv command to see that the LANG variable is unset and that Italian is taken as default in such a case. so I just put export LANG=en_GB.UTF-8 in my /etc/profile (actually in a script under /etc/profile.d). I've no idea why all of a sudden it takes such a default. My system is configured as English with Italian keyboard layout.