diff --git a/game/game.go b/game/game.go
index 48013fd..ddc6113 100644
--- a/game/game.go
+++ b/game/game.go
@@ -191,6 +191,7 @@ func (g *Match) Shoot(id player.ID, self bool) error {
 	if live {
 		target.hp -= g.damage
 		if target.hp <= 0 {
+			target.hp = 0 // in case it goes negative
 			// If the target is the challenger, the match is over as well.
 			if target == &g.players[1] {
 				g.round = 3