Windows boots first after Windows 10 update

Hey, so I'm running Windows 10 on my 2015 Retina MacBook Pro via Boot Camp. A couple days ago, I installed the big anniversary update for Windows 10. Since then, whenever I boot my MBP, it always tries to boot to Windows first for some reason. I always to have to ALT-boot to access OS X.

Anyone else experiencing this? And is there someway I can fix it? I feel like Windows messed with the EFI or something...