Compatibility?

OK so this is my build, I just got the video card in the mail today and it says that it uses a pci-e 3.0 X16, my mother board has pci-e 2.0 X16, will there be compatibility issues there? 

http://pcpartpicker.com/p/F6XY

the motherboard has already been purchased and is also on its way, so am I fucked? 

they will work fine

excellent thank you very much