diff --git a/CraftBukkit/Reduce-ItemStack-copying.patch b/CraftBukkit/Reduce-ItemStack-copying.patch
index 900ab0af..76e4b4e9 100644
--- a/CraftBukkit/Reduce-ItemStack-copying.patch
+++ b/CraftBukkit/Reduce-ItemStack-copying.patch
@@ -263,7 +263,7 @@ diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventory.java
 -            }
 -        }
 -        return -1;
-+        return ListUtils.indexOf(storage(), Objects::isNull);
++        return ListUtils.indexOf(storage(), item -> item == null || Material.AIR.equals(item.getType()));
      }
  
      public int firstPartial(int materialId) {