diff --git a/src/pocketmine/inventory/BaseInventory.php b/src/pocketmine/inventory/BaseInventory.php
index 09dbd24c2..6328360da 100644
--- a/src/pocketmine/inventory/BaseInventory.php
+++ b/src/pocketmine/inventory/BaseInventory.php
@@ -62,16 +62,6 @@ abstract class BaseInventory implements Inventory{
 		return $this->slots->getSize();
 	}
 
-	/**
-	 * Sets the new size of the inventory.
-	 * WARNING: If the size is smaller, any items past the new size will be lost.
-	 *
-	 * @param int $size
-	 */
-	public function setSize(int $size) : void{
-		$this->slots->setSize($size);
-	}
-
 	public function getMaxStackSize() : int{
 		return $this->maxStackSize;
 	}
diff --git a/src/pocketmine/inventory/CraftingGrid.php b/src/pocketmine/inventory/CraftingGrid.php
index 2cdabff19..bd29d8c8b 100644
--- a/src/pocketmine/inventory/CraftingGrid.php
+++ b/src/pocketmine/inventory/CraftingGrid.php
@@ -57,10 +57,6 @@ class CraftingGrid extends BaseInventory{
 		return $this->gridWidth;
 	}
 
-	public function setSize(int $size) : void{
-		throw new \BadMethodCallException("Cannot change the size of a crafting grid");
-	}
-
 	public function setItem(int $index, Item $item, bool $send = true) : void{
 		parent::setItem($index, $item, $send);
 		$this->seekRecipeBounds();
diff --git a/src/pocketmine/inventory/PlayerCursorInventory.php b/src/pocketmine/inventory/PlayerCursorInventory.php
index e760493f2..a016d3b4f 100644
--- a/src/pocketmine/inventory/PlayerCursorInventory.php
+++ b/src/pocketmine/inventory/PlayerCursorInventory.php
@@ -34,10 +34,6 @@ class PlayerCursorInventory extends BaseInventory{
 		parent::__construct(1);
 	}
 
-	public function setSize(int $size) : void{
-		throw new \BadMethodCallException("Cursor can only carry one item at a time");
-	}
-
 	/**
 	 * This override is here for documentation and code completion purposes only.
 	 * @return Player