diff --git a/vacuum_gambit.p8 b/vacuum_gambit.p8
index d4e6490..1b779bf 100644
--- a/vacuum_gambit.p8
+++ b/vacuum_gambit.p8
@@ -911,9 +911,11 @@ player = ship_m.new{
 mknew(player,
  function(p)
   p.main_gun = zap_gun.new()
-  -- ONE HIT MODE
-  -- p.hp = 1
-  -- p.maxhp = 1
+  -- ONE HIT MODE: max hp is
+  -- minimum nonzero value.
+  --
+  -- p.hp = 0x0.0001
+  -- p.maxhp = 0x0.0001
   -- p.shield = 0
   -- p.maxshield = 0
  end