diff --git a/src/Actions/RedeemsCoupon.php b/src/Actions/RedeemsCoupon.php
index 395383f..d4ed332 100644
--- a/src/Actions/RedeemsCoupon.php
+++ b/src/Actions/RedeemsCoupon.php
@@ -17,15 +17,8 @@ class RedeemsCoupon extends ModelAction
      * Redeem coupon by order
      * @throws \Exception
      */
-    public function redeemCoupon($couponCondition)
+    public function redeemCoupon(CartCondition $couponCondition)
     {
-        if (!$couponCondition instanceof CartCondition) {
-            throw new \InvalidArgumentException(sprintf(
-                'Invalid argument, expected %s, got %s',
-                CartCondition::class, get_class($couponCondition)
-            ));
-        }
-
         if (!$couponLog = $this->logCouponHistory($couponCondition)) {
             return false;
         }