exporting to pdf with code block makes code block font unweildy

My aim was to use Confluence to create good documentation for external customers and use the PDF export feature to give to customers. That has worked until I needed to add example code. The font for the code block is huge and nonsensically so.

https://img.skitch.com/20120612-m6y63ethqfnamxs3rj2wyk3j6k.png

NOTE: there have been no changes to custom PDF css