diff --git a/src/Invoice.php b/src/Invoice.php
index cf09d993..4f1d4568 100644
--- a/src/Invoice.php
+++ b/src/Invoice.php
@@ -224,7 +224,7 @@ public function discountFor(Discount $discount)
      * Calculate the raw amount for a given discount.
      *
      * @param  \Laravel\Cashier\Discount  $discount
-     * @return int|null
+     * @return \Stripe\StripeObject|null
      */
     public function rawDiscountFor(Discount $discount)
     {