@ -520,7 +520,7 @@ char *arg_log_to_file(const char *arg, struct lightningd *ld)
void opt_register_logging(struct lightningd *ld)
{
opt_register_arg("--log-level", arg_log_level, show_log_level, ld->log,
"log level (debug, info, unusual, broken)");
"log level (io, debug, info, unusual, broken)");
opt_register_arg("--log-prefix", arg_log_prefix, show_log_prefix,
ld->log,
"log prefix");