diff --git a/src/data/move.ts b/src/data/move.ts
index cb6e91a2362..18f4b220911 100644
--- a/src/data/move.ts
+++ b/src/data/move.ts
@@ -1869,7 +1869,7 @@ export class AddSubstituteAttr extends MoveEffectAttr {
   /** Whether the damage taken should be rounded up (Shed Tail rounds up) */
   private roundUp: boolean;
 
-  constructor(hpCost: number = 0.25, roundUp: boolean) {
+  constructor(hpCost: number, roundUp: boolean) {
     super(true);
 
     this.hpCost = hpCost;