diff --git a/squirrelbattle/game.py b/squirrelbattle/game.py
index 2aa21f5..685eb6b 100644
--- a/squirrelbattle/game.py
+++ b/squirrelbattle/game.py
@@ -193,7 +193,9 @@ class Game:
             self.store_menu.go_down()
         if self.store_menu.values and not self.player.dead:
             if key == KeyValues.ENTER:
-                self.player.add_to_inventory(self.store_menu.validate())
+                item = self.store_menu.validate()
+                self.player.add_to_inventory(item)
+                self.store_menu.merchant.inventory.remove(item)
             # Ensure that the cursor has a good position
             self.store_menu.position = min(self.store_menu.position,
                                            len(self.store_menu.values) - 1)