diff --git a/src/common/Common.h b/src/common/Common.h
index ce25b64f..a78728e4 100644
--- a/src/common/Common.h
+++ b/src/common/Common.h
@@ -216,6 +216,8 @@ namespace Sapphire::Common
     HandIn = 2005,
     DamagedGear = 2007,
     //UNKNOWN_1 = 2008,
+    // Temporary inventory that is used for the "trade" window
+    TradeInventory = 2009,
 
     ArmoryOff = 3200,
     ArmoryHead = 3201,
diff --git a/src/common/Network/PacketDef/Ipcs.h b/src/common/Network/PacketDef/Ipcs.h
index 116742c6..31cb114e 100644
--- a/src/common/Network/PacketDef/Ipcs.h
+++ b/src/common/Network/PacketDef/Ipcs.h
@@ -333,7 +333,7 @@ namespace Sapphire::Network::Packets
 
     UpdatePositionHandler = 0x01EC, // updated 5.1
 
-    InventoryModifyHandler = 0x0148, // updated 5.0
+    InventoryModifyHandler = 0x0372, // updated 5.1
     InventoryEquipRecommendedItems = 0x0149, // updated 5.0
 
     ReqPlaceHousingItem = 0x014B, // updated 5.0