Document zipper lowercase extension

hi,
have a question about the Document zipper plugin

I have a folder in Appian which I want to zip, the contents of this folder contain PDF documents in the following format: 00000.PDF where the extension is in capital letters.

When the process that contains the document zipper node is launched, it creates the zip with all the documents correctly but the documents appear with the extension in lowercase. 00000.pdf

Is there a way to keep the extension capitalized like the original documents in the folder?

thanks