diff --git a/src/Pinch.SDK.WebSample/Controllers/PaymentsController.cs b/src/Pinch.SDK.WebSample/Controllers/PaymentsController.cs
index 22292ed..ecfcc4c 100644
--- a/src/Pinch.SDK.WebSample/Controllers/PaymentsController.cs
+++ b/src/Pinch.SDK.WebSample/Controllers/PaymentsController.cs
@@ -61,7 +61,7 @@ public async Task<IActionResult> Realtime(CreateRealtimePaymentVm model)
                 CreditCardToken = model.CreditCardToken,
                 Amount = Convert.ToInt32(model.Amount * 100),                
                 Description = model.Description,
-                Nonce = model.Nonce
+                Nonce = new List<string> { model.Nonce }
             });
 
             if (!result.Success)
diff --git a/src/Pinch.SDK/Payments/RealtimePaymentSaveOptions.cs b/src/Pinch.SDK/Payments/RealtimePaymentSaveOptions.cs
index 13fa393..00ebea5 100644
--- a/src/Pinch.SDK/Payments/RealtimePaymentSaveOptions.cs
+++ b/src/Pinch.SDK/Payments/RealtimePaymentSaveOptions.cs
@@ -77,6 +77,6 @@ public class RealtimePaymentSaveOptions
         /// Optional. Pinch will echo back the nonce value in the response, this is for replay protection.
         /// If the same Nonce is detected the in progress payment object will be returned.
         /// </summary>
-        public string Nonce { get; set; }
+        public List<string> Nonce { get; set; }
     }
 }