diff --git a/src/ui/egg-gacha-ui-handler.ts b/src/ui/egg-gacha-ui-handler.ts
index 2c2b823ec8f..4f771fa19e5 100644
--- a/src/ui/egg-gacha-ui-handler.ts
+++ b/src/ui/egg-gacha-ui-handler.ts
@@ -343,7 +343,7 @@ export default class EggGachaUiHandler extends MessageUiHandler {
       eggs = [];
       const tierValueOffset = this.gachaCursor === GachaType.LEGENDARY ? 1 : 0;
       const tiers = new Array(pullCount).fill(null).map(() => {
-        const tierValue = Utils.randInt(1024);
+        const tierValue = Utils.randInt(256);
         return tierValue >= 52 + tierValueOffset ? EggTier.COMMON : tierValue + tierValueOffset >= 8 ? EggTier.GREAT : tierValue >= 1 + tierValueOffset ? EggTier.ULTRA : EggTier.MASTER;
       });
       if (pullCount >= 25 && !tiers.filter(t => t >= EggTier.ULTRA).length)