shard of plastic coming away from the body - warranty question

I've had my MacBook for under a year. Last night, at the bottom right edge of the laptop (in between the trackpad/button and right edge of the computer) a piece of the body came away. I was left with a shard of plastic about an inch and a half in length 3mm thick hanging off. I've reattached it with a little glue but obviously it's still damaged.

My question: the MacBook is still under a year warranty so can I take it back to where I bought it and get it replaced as obviously it's not supposed to do this?

Btw, I was not doing anything different, the laptop has always been properly looked after and maintained.

Looking forward to hearing from you and thanks in advance for your time.

Peace

DK