diff --git a/src/data/custom-pokemon-data.ts b/src/data/custom-pokemon-data.ts
index c8e89fd8748..20f6ea96174 100644
--- a/src/data/custom-pokemon-data.ts
+++ b/src/data/custom-pokemon-data.ts
@@ -21,7 +21,7 @@ export class CustomPokemonData {
   public hitsRecCount: number | null = null;
 
   constructor(data?: CustomPokemonData | Partial<CustomPokemonData>) {
-    this.spriteScale = data?.spriteScale ?? 1;
+    this.spriteScale = data?.spriteScale ?? -1;
     this.ability = data?.ability ?? -1;
     this.passive = data?.passive ?? -1;
     this.nature = data?.nature ?? -1;