diff --git a/src/battle.ts b/src/battle.ts
index 4723ab5..316b98d 100644
--- a/src/battle.ts
+++ b/src/battle.ts
@@ -499,7 +499,7 @@ export class Battle {
         },
         buffBuff: (self: BattleUnit, target: BattleUnit, battle: Battle) => {
             target.potencyEffects = target.potencyEffects.map(effect => {
-                if (effect.potency > 0) effect.potency *= 2;
+                effect.potency = Math.max(effect.potency*2, effect.potency);
 
                 return effect;
             });