Case Problems

[Chives]

I recently bought a pc from overclockers a small flap at the front has broken off and fallen inside the case. is the extra hole at the front going to cause problems eg dust?
Image below.

 

[Chives]

Cheers guy's I am not bothered about it being gone tbh. I will just keep a close eye to make sure dust isn't getting in through the hole . Luckily enough the computer runs very cool around the front so there shouldn't be much/any dust at all. Thanks for your advice