diff --git a/game-server/app/services/guildBossService.ts b/game-server/app/services/guildBossService.ts
index 52de6a7ae..5947ae875 100644
--- a/game-server/app/services/guildBossService.ts
+++ b/game-server/app/services/guildBossService.ts
@@ -226,6 +226,10 @@ export async function getBossHp(serverId: number, guildCode: string, dicBossBase
         B = 1;
         bossHp = minBossHp;
     }
+    if(bossHp < minBossHp) {
+        B = 1;
+        bossHp = minBossHp;
+    }
     console.log(`getBossHp B ${B}`);
     return { ratio: B, bossHp: zoomInDamage(bossHp) };
 }