corsika.cpp breaks at runtime

There seems to have been a copy-paste error in example/corsika.cpp

  app.add_option("-v,--verbosity", "Verbosity level")
      ->default_str("info")
      ->check(CLI::IsMember({"warn", "info", "debug", "trace"}))
      ->group("Misc.");
  app.add_option("-v,--verbosity", "Verbosity level: warn, info, debug, trace.")
      ->default_val("info")
      ->check(CLI::IsMember({"warn", "info", "debug", "trace"}))
      ->group("Misc.");

that is the option "verbosity" is added twice. This breaks at runtime:

./bin/corsika 
terminate called after throwing an instance of 'CLI::OptionAlreadyAdded'
  what():  added option matched existing option name: v is already added
Aborted (core dumped)

Or I am reading things wrong again 😄 If this is real it begs the question how often do we run the examples during CI?