diff --git a/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java b/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
index ffd0e83f5c..025e844209 100644
--- a/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
+++ b/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
@@ -371,6 +371,7 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
 
     @Override
     public void openInventory(InventoryView inventory) {
+        Preconditions.checkArgument(this.equals(inventory.getPlayer()), "InventoryView must belong to the opening player");
         if (!(getHandle() instanceof EntityPlayer)) return; // TODO: NPC support?
         if (((EntityPlayer) getHandle()).connection == null) return;
         if (getHandle().containerMenu != getHandle().inventoryMenu) {