Wondering what I should do about this crack in my Nikon 70-300mm lens. It seems to work the same and has no negative impact on photos but I’d still like it fixed or at the least suggestion to help prevent it from getting worse. 

![](https://i.stack.imgur.com/7RdOK.jpg)
[![enter image description here](https://i.stack.imgur.com/PhtDy.jpg)](https://i.stack.imgur.com/PhtDy.jpg)