diff --git a/src/modifier/modifier.ts b/src/modifier/modifier.ts
index fd738060506..5a813d8cbb2 100644
--- a/src/modifier/modifier.ts
+++ b/src/modifier/modifier.ts
@@ -2586,7 +2586,7 @@ export class HealShopCostModifier extends PersistentModifier {
   constructor(type: ModifierType, shopMultiplier: number, stackCount?: integer) {
     super(type, stackCount);
 
-    this.shopMultiplier = shopMultiplier;
+    this.shopMultiplier = shopMultiplier ?? 2.5;
   }
 
   match(modifier: Modifier): boolean {
@@ -2604,6 +2604,10 @@ export class HealShopCostModifier extends PersistentModifier {
     return true;
   }
 
+  getArgs(): any[] {
+    return super.getArgs().concat(this.shopMultiplier);
+  }
+
   getMaxStackCount(scene: BattleScene): integer {
     return 1;
   }