diff --git a/src/Stripe.net/Entities/Charges/ChargeTransferData.cs b/src/Stripe.net/Entities/Charges/ChargeTransferData.cs
index 675ebbdf06..30a167b0bb 100644
--- a/src/Stripe.net/Entities/Charges/ChargeTransferData.cs
+++ b/src/Stripe.net/Entities/Charges/ChargeTransferData.cs
@@ -6,7 +6,7 @@ namespace Stripe
     public class ChargeTransferData : StripeEntity
     {
         [JsonProperty("amount")]
-        public long Amount { get; set; }
+        public long? Amount { get; set; }
 
         #region Expandable Destination (Account)
         [JsonIgnore]