TinyMCE not working in terms of image uploads

Howdy all, I think this is the closest existing thread…

Brand new fresh install of 3.1.1.4 with Apache pointing to the home directory of /xxxx/htdocs/ojs/(index.php)
Using OJS tools (like Site>upload logo; upload CSS) all is good.

But using TinyMCE to upload an image inside a text area, and TinyMCE creates a path to the image with:
/ojs/public…etc

In other words, TinyMCE thinks there should be an /ojs/ component at root, but this is not the case.

Question is: how can I give TinyMCE a specific path for the base_url without breaking the rest of the site config?

Thanks!