My macbook charger is charging but is not lighting.

Hey guys. My macbook charger (Magsafe 2 Power adapter) is charging but the small indicator light was not lighting. I made sure that the port was clean and I also made sure that the charger was placed securely on the power outlet. Aside from that, the metal teeth on the charger doesn't seem bent or broken either. So I was wondering what caused this (is it a sign that I need to replace my charger?) and if there's a way to make the charger light up again. Do you guys know? Thanks.