diff --git a/src/Cart.php b/src/Cart.php
index db45319..f1b0291 100644
--- a/src/Cart.php
+++ b/src/Cart.php
@@ -142,7 +142,7 @@ class Cart
                 throw new InvalidArgumentException('$qtyOrOptions must be of array (options) or null when adding a Buyable instance');
             }
             
-            $cartItem = CartItem::fromBuyable($id, $nameOrQty ?: 1, $qtyOrOptions ?: []);
+            $cartItem = CartItem::fromBuyable($id, $nameOrQty ?: 1, new CartItemOptions($qtyOrOptions ?: []));
             $cartItem->associate($id);
             
             return $this->addCartItem($cartItem);