diff --git a/test/testUtils/helpers/classicModeHelper.ts b/test/testUtils/helpers/classicModeHelper.ts
index 59370d9e56a..df4b94c106b 100644
--- a/test/testUtils/helpers/classicModeHelper.ts
+++ b/test/testUtils/helpers/classicModeHelper.ts
@@ -64,7 +64,6 @@ export class ClassicModeHelper extends GameManagerHelper {
    * @deprecated - Specifying the starters helps prevent inconsistencies from internal RNG changes.
    */
   async startBattle(): Promise<void>;
-  async startBattle(species?: SpeciesId[]): Promise<void> {
   async startBattle(species?: SpeciesId[]): Promise<void> {
     await this.runToSummon(species);