very small stone in my cove

Hello,
I had a Doughboy pool installed in my backyard last year. We had a lot of problems with the cove washing out and put in french drains in an upside down "U" shape to drain the water. This has prevented any further washout. But just recently I was checking out the floor and cove of the pool to make sure that everything was stable and I feel a small stone in the cove of my pool. I doesn't feel especially sharp, but it has a triangle like feel to it. Do I need to worry about it causing a hole in my liner? Luckily it is not where anyone would step and I don't vacuum in that area so as not to cause any ripping of the liner. Thanks for any response.