diff --git a/src/treepuncher/game/container.py b/src/treepuncher/game/container.py
index 4ebef0d..449b9a6 100644
--- a/src/treepuncher/game/container.py
+++ b/src/treepuncher/game/container.py
@@ -67,5 +67,9 @@ class GameContainer(Scaffold):
 
 		@self.on_packet(PacketSetSlot)
 		async def on_set_slot(packet:PacketSetSlot):
-			if self.window_id > 0 and packet.windowId == self.window_id:
+			if packet.windowId < 0:
+				self.window_entity_id = 0
+				self.window_id = 0
+				self.window_title = ""
+			elif self.window_id > 0 and packet.windowId == self.window_id:
 				self.window_inventory[packet.slot] = packet.item