syntax error, unexpected kEND, expecting $end

I get this error

/Users/sopira/rubydev/hello/app/models/spracovatel.rb:5: syntax error,
unexpected kEND, expecting $end

on the 5th line of the code, which has got just (and only) 5 line:

CODE:
Class Spracovatel
  def spracovat
    return 5
  end
end

What can cause this error?
After digging all the internet I have not found any idea.
Maybe here.

Thanks,
Michael.

I get this error

/Users/sopira/rubydev/hello/app/models/spracovatel.rb:5: syntax error,
unexpected kEND, expecting $end

on the 5th line of the code, which has got just (and only) 5 line:

CODE:
Class Spracovatel

That should be class not Class

Colin