From 87e28b70fd99516535dbd0d3a4b11d4aad2beac6 Mon Sep 17 00:00:00 2001
From: "nicolas.dorier" <nicolas.dorier@gmail.com>
Date: Sun, 6 May 2018 13:55:03 +0900
Subject: [PATCH] cap MinimumTotalDue to 1 satoshi

---
 BTCPayServer/Services/Invoices/InvoiceEntity.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/BTCPayServer/Services/Invoices/InvoiceEntity.cs b/BTCPayServer/Services/Invoices/InvoiceEntity.cs
index e6bcee054..765e721ec 100644
--- a/BTCPayServer/Services/Invoices/InvoiceEntity.cs
+++ b/BTCPayServer/Services/Invoices/InvoiceEntity.cs
@@ -676,7 +676,7 @@ namespace BTCPayServer.Services.Invoices
             accounting.Due = Money.Max(accounting.TotalDue - accounting.Paid, Money.Zero);
             accounting.DueUncapped = accounting.TotalDue - accounting.Paid;
             accounting.NetworkFee = accounting.TotalDue - totalDueNoNetworkCost;
-            accounting.MinimumTotalDue = Money.Satoshis(accounting.TotalDue.Satoshi * (1.0m - ((decimal)ParentEntity.PaymentTolerance / 100.0m)));
+            accounting.MinimumTotalDue = Money.Max(Money.Satoshis(1), Money.Satoshis(accounting.TotalDue.Satoshi * (1.0m - ((decimal)ParentEntity.PaymentTolerance / 100.0m))));
             return accounting;
         }