Cal 39 Keel hull joint crack

Am very late splashing this year and was sanding my bottom this evening and discovered this crack in the leading edge of the keel where it joins the hull. It doesn't appear to be very deep and I did do a lot of work along the whole seam of the boat when I first got it so I'm not too worried about it. I also am pretty sure when it happened but wanted to know if anyone else had experienced anything like this and if so, did it turn out to be a big deal? Thanks - Paul West Adventure Kwest Cal 39