2D colliders doesnt work with Gravity Scale = 0

I'm doing a game with an up view, so gravity doesnt exist here, the thing is that if I put the Gravity Scale to 0 the 2DBoxColliders doesnt interact with each other, I solve this by setting the Gravity Scale to a very small number, but I dont think this is the correct way to fix it, the only object thats moves is the players and its being move by .MovePosition(...)