diff --git a/src/test/battle/battle.test.ts b/src/test/battle/battle.test.ts
index 87949be70a8d..61dcd5f671b8 100644
--- a/src/test/battle/battle.test.ts
+++ b/src/test/battle/battle.test.ts
@@ -151,8 +151,8 @@ describe("Test Battle Phase", () => {
 
   it("test remove random battle seed int", async() => {
     for (let i=0; i<10; i++) {
-      const rand = game.scene.randBattleSeedInt(15);
-      expect(rand).toBe(14);
+      const rand = game.scene.randBattleSeedInt(16);
+      expect(rand).toBe(15);
     }
   });