diff --git a/tests/unit/CartRule/CartRuleCest.php b/tests/unit/CartRule/CartRuleCest.php
index 0202929b8..17d334acc 100644
--- a/tests/unit/CartRule/CartRuleCest.php
+++ b/tests/unit/CartRule/CartRuleCest.php
@@ -106,7 +106,6 @@ class expectedCartItem
 class expectedCart
 {
     public const CART_TOTAL_PRECISION = 2;
-    public const CART_GRAND_TOTAL_PRECISION = 4;
 
     public $customer_id;
     public $id;
@@ -141,13 +140,13 @@ class expectedCart
         $this->tax_total = round($this->tax_total, self::CART_TOTAL_PRECISION);
         $this->discount_amount = round($this->discount_amount, self::CART_TOTAL_PRECISION);
         $this->grand_total = round($this->sub_total + $this->tax_total - $this->discount_amount,
-            self::CART_GRAND_TOTAL_PRECISION);
+            self::CART_TOTAL_PRECISION);
 
         $this->base_sub_total = round($this->base_sub_total, self::CART_TOTAL_PRECISION);
         $this->base_tax_total = round($this->base_tax_total, self::CART_TOTAL_PRECISION);
         $this->base_discount_amount = round($this->base_discount_amount, self::CART_TOTAL_PRECISION);
         $this->base_grand_total = round($this->base_sub_total + $this->base_tax_total - $this->base_discount_amount,
-            self::CART_GRAND_TOTAL_PRECISION);
+            self::CART_TOTAL_PRECISION);
     }
 
     public function toArray(): array