for (i = 0; i < n_errors; i++)
{
- error_name = format (0, "/err/%s/%s%c", n->name, error_strings[i], 0);
+ error_name = format (0, "/err/%v/%s%c", n->name, error_strings[i], 0);
/* Note: error_name consumed by the following call */
vlib_stats_register_error_index (error_name, n->error_heap_index + i);
}