If you are not using the provided change addresses so you can redirect the change to a different wallet, perhaps a different address type to confuse transaction heuristics and blockchain analysis, or perhaps to deposit to an account at a service, then that's a great idea and good use of your change.

If, however, you are doing as NeuroticFish suspects and just sending the change back to the same address it came from, then can I ask why you are doing that? It achieves absolutely nothing beneficial, it does not make future transactions any smaller, it does not save you on fees, but it does compromise your privacy and the privacy of other people you are transacting with (and potentially even your security in rare cases).