#define ERR_NONICKNAMEGIVEN_MSG "431 %s :No nickname given"
#define ERR_ERRONEUSNICKNAME_MSG "432 %s %s :Erroneous nickname"
#define ERR_NICKNAMETOOLONG_MSG "432 %s %s :Nickname too long, max. %u characters"
+#define ERR_FORBIDDENNICKNAME_MSG "432 %s %s :Nickname is forbidden/blocked"
#define ERR_NICKNAMEINUSE_MSG "433 %s %s :Nickname already in use"
#define ERR_USERNOTINCHANNEL_MSG "441 %s %s %s :They aren't on that channel"
#define ERR_NOTONCHANNEL_MSG "442 %s %s :You are not on that channel"