Can't Convert Simple Object to Shape

I've looked around for answers here but couldn't find anything matching my rather simple problem: I have a black silhouette of a leaf shape, all vector, no stroke or mask or any extraneous elements, and it simply will not convert to a shape no matter what I do to it (so that I can select all of the leaf objects at once in the more complex tree graphic I'm working with). I've expanded (not that it needed it) and tried a variety of tricks I found online, but to no avail, it's always "Object not converted." It has two points total! Here's the shape, in all its simplicity:

Thanks in advance for your help!