How do I fix this crack in the wood?

[cold plaza]

I've got this crack that formed after putting these dovetails together. It goes on to the other side. Any way to fix it or should I just leave it since it's just going to be a box.

[stray flint]

Your dovetail is too tight because that pin is still too large. Disassembling the joint and removing the excess is the minimum first step.

Could be the pin or tail technically but the faces where the crack comes from are the problem and need to be adjusted