Looks good.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/battle/struct/btl_attack.erl b/src/battle/struct/btl_attack.erl
index 72e7b98..61c58be 100644
--- a/src/battle/struct/btl_attack.erl
+++ b/src/battle/struct/btl_attack.erl
@@ -160,7 +160,7 @@ effect_of_attack
    {ParryIsSuccessful, PositiveModifier, NegativeModifier} =
       case CanParry of
          true -> roll_parry(DefStats, DefenderLuck);
-         false -> {false, 0}
+         false -> {false, 0, 0}
       end,
 
    S0DefenderLuck = (DefenderLuck + PositiveModifier),
diff --git a/src/shared/shr_roll.erl b/src/shared/shr_roll.erl
index 0e44d63..b2aca29 100644
--- a/src/shared/shr_roll.erl
+++ b/src/shared/shr_roll.erl
@@ -71,5 +71,5 @@ percentage_with_luck (Chance, Luck) ->
       ModedRoll,
       IsSuccess,
       (BadLuckBonus + calculate_costs(IsSuccess, Roll, Chance)),
-      (-1 * calculate_costs(IsSuccess, Roll, ModedChance))
+      calculate_costs((not IsSuccess), (100 - Roll), (100 - ModedChance))
    }.