diff --git a/nms-patches/ContainerCartography.patch b/nms-patches/ContainerCartography.patch
index 9fa8dd76ca..84b2dea868 100644
--- a/nms-patches/ContainerCartography.patch
+++ b/nms-patches/ContainerCartography.patch
@@ -22,7 +22,7 @@
 +            return bukkitEntity;
 +        }
 +
-+        CraftInventoryCartography inventory = new CraftInventoryCartography(this.inventory);
++        CraftInventoryCartography inventory = new CraftInventoryCartography(this.inventory, this.f);
 +        bukkitEntity = new CraftInventoryView(this.player, inventory, this);
 +        return bukkitEntity;
 +    }
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryCartography.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryCartography.java
index 6cfa3d3e0a..892fc902bc 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryCartography.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryCartography.java
@@ -5,7 +5,15 @@ import org.bukkit.inventory.CartographyInventory;
 
 public class CraftInventoryCartography extends CraftInventory implements CartographyInventory {
 
-    public CraftInventoryCartography(IInventory inventory) {
+    private final IInventory resultInventory;
+
+    public CraftInventoryCartography(IInventory inventory, IInventory resultInventory) {
         super(inventory);
+        this.resultInventory = resultInventory;
+    }
+
+    @Override
+    public int getSize() {
+        return super.getSize() + resultInventory.getSize();
     }
 }