diff --git a/tests/CartTest.php b/tests/CartTest.php
index 8a69507..edbd279 100644
--- a/tests/CartTest.php
+++ b/tests/CartTest.php
@@ -525,7 +525,7 @@ class CartTest extends TestCase
         ]));
 
         $cartItem = $cart->get('027c91341fd5cf4d2579b49c4b6a90da');
-        $this->assertEquals(0.21, $cartItem->taxRate);
+        $this->assertEquals(0.21, config('cart.tax'));
         $this->assertEquals(0.21, $cartItem->taxRate);
         $this->assertEquals(new Money(1000, $cartItem->price->getCurrency()), $cartItem->price());
         $this->assertEquals(new Money(1000, $cartItem->price->getCurrency()), $cartItem->subtotal());