Images in markdown files in GitHub Enterprise

I'm working on a README.md file in a GitHub Enterprise repository.

It's funny, I'm using the same code snippet I use in my public repositories, i.e.

![alt text](https://raw.github.com/repository/project/master/filename.png)

Unfortunately, this kind of command doesn't work on the enterprise project.

I see one big difference in the raw version of a picture. Specifically, in the enterprise repository I have a the URL of the raw picture file with a query parameter, e.g.

?token=AAABGqiVI6Qk6Mi4ZM0ZBeHrXexkUBmNks5W_AyCwA%3D%3D

Does someone know how to embed a picture in a markdown in GutHub enterprise?