Nexus 5 fell, back popped open

So, today while walking my nexus 5 fell. I picked it up and noticed that on one side, the back popped open a bit. It's not a big gap, but big enough to get a peek of the inside. (I attached a photo of it)

Do you think Google will fix this for me? Or should I try to myself? Or is covering it with a snap-on case enough of a fix?