[racket] serializable structs and portability

Hi,

I'm playing with serializable structs and noticed that the absolute path of the source rkt definition is inserted in the representation (I'm writing structs out to a file). 
The problem is that if I then move my application to a server for deployment, all serialized structs cannot be deserialized anymore. If I edit/replace, it works, but I assume this is not the right way to proceed.

What is the best way to obtain "portable" serialized structs?

Thanks,

-- Éric