Actually Show the Name of the Application in About
In Fedora (and other distros I assume) Evince is titled as "Document Viewer" in the app menu. Once it is open, the about box also says the name of the program is "Document Viewer".
I wanted to recommend it to a friend, but there is no program called "Document Viewer" in their distro's package manager. The about box does say that it is by the "Evince authors" - but that is a very different thing than saying directly that it IS evince.
Put the name of the application in the about box, so people know what it is, and more importantly how to get it if they want to install it somewhere else.
This is clearly an unforced error (unless you don't want people to use your stuff).