A hint: the problem in your code is to do with the data types you're using.

This is a problem with your code, not an issue with the kata. Please only use the issue tag if you're sure there's something wrong with the kata itself.

Which language ? Which error ?
Removing the () in the sample test would mean that you should return an int when descrption say you should return a function.
Not an issue IMHO, feel free to reraise if you disagree but please provide the language and the error message.

There are already open issues about the same, please don't open another.