diff --git a/src/CNShardServer.cpp b/src/CNShardServer.cpp
index e2aefc2..e6bc59a 100644
--- a/src/CNShardServer.cpp
+++ b/src/CNShardServer.cpp
@@ -47,7 +47,6 @@ void CNShardServer::keepAliveTimer(CNServer* serv, time_t currTime) {
 }
 
 void CNShardServer::periodicSaveTimer(CNServer* serv, time_t currTime) {
-    std::cout << "players size: " << PlayerManager::players.size() << std::endl;
     for (auto& pair : PlayerManager::players) {
         Database::updatePlayer(pair.second.plr);
     }
diff --git a/src/ItemManager.cpp b/src/ItemManager.cpp
index b6b2bc2..627192e 100644
--- a/src/ItemManager.cpp
+++ b/src/ItemManager.cpp
@@ -162,6 +162,12 @@ void ItemManager::itemGMGiveHandler(CNSocket* sock, CNPacketData* data) {
         // sock->sendPacket(new CNPacketData((void*)resp, P_FE2CL_REP_PC_GIVE_ITEM_FAIL, sizeof(sP_FE2CL_REP_PC_GIVE_ITEM_FAIL), sock->getFEKey()));
     } else if (itemreq->eIL == 1 && itemreq->Item.iType >= 0 && itemreq->Item.iType <= 10) {
 
+        if (ItemData.find(std::pair<int32_t, int32_t>(itemreq->Item.iID, itemreq->Item.iType)) == ItemData.end()) {
+            // invalid item
+            std::cout << "[WARN] Item id " << itemreq->Item.iID << " with type " << itemreq->Item.iType << " is invalid (give item)" << std::endl;
+            return;
+        }
+
         INITSTRUCT(sP_FE2CL_REP_PC_GIVE_ITEM_SUCC, resp);
 
         resp.eIL = itemreq->eIL;