diff --git a/server/PacketHandler.cpp b/server/PacketHandler.cpp
index dd2456a..986359e 100644
--- a/server/PacketHandler.cpp
+++ b/server/PacketHandler.cpp
@@ -52,9 +52,9 @@ PacketHandler::HandlePacket(std::shared_ptr<Session> session,
   } break;
 
   case PacketID::CS_UpgradeSword: {
-    uint32_t currentLevel = session->GetSwordLevel();
-    uint64_t cost = SwordLogic::GetUpgradeCost(currentLevel);
-    uint64_t currentGold = session->GetGold();
+    auto currentLevel = session->GetSwordLevel();
+    auto cost = SwordLogic::GetUpgradeCost(currentLevel);
+    auto currentGold = session->GetGold();
 
     Protocol::SC_UpgradeResult res;
     if (currentGold < cost) {
@@ -62,7 +62,7 @@ PacketHandler::HandlePacket(std::shared_ptr<Session> session,
       res.set_result(2);
     } else {
       session->SetGold(currentGold - cost);
-      uint8_t result = SwordLogic::TryUpgrade(currentLevel);
+      auto result = SwordLogic::TryUpgrade(currentLevel);
       res.set_result(result);
 
       // 성공
@@ -113,9 +113,9 @@ PacketHandler::HandlePacket(std::shared_ptr<Session> session,
   } break;
 
   case PacketID::CS_SellSword: {
-    uint32_t currentLevel = session->GetSwordLevel();
-    uint64_t price = SwordLogic::GetSellPrice(currentLevel);
-    uint64_t newGold = session->GetGold() + price;
+    auto currentLevel = session->GetSwordLevel();
+    auto price = SwordLogic::GetSellPrice(currentLevel);
+    auto newGold = session->GetGold() + price;
 
     session->SetGold(newGold);
     session->SetSwordLevel(0);