From 1c0cce3f5812cd2796ab9693b47f035427ca5340 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian@dold.me>
Date: Mon, 12 Jul 2021 15:55:31 +0200
Subject: tolerate zero-value payments

---
 packages/taler-wallet-core/src/operations/pay.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'packages/taler-wallet-core/src/operations/pay.ts')

diff --git a/packages/taler-wallet-core/src/operations/pay.ts b/packages/taler-wallet-core/src/operations/pay.ts
index 33d3bc83c..fed61428c 100644
--- a/packages/taler-wallet-core/src/operations/pay.ts
+++ b/packages/taler-wallet-core/src/operations/pay.ts
@@ -145,7 +145,8 @@ export async function getTotalPaymentCost(
         costs.push(pcs.coinContributions[i]);
         costs.push(refreshCost);
       }
-      return Amounts.sum(costs).amount;
+      const zero = Amounts.getZero(pcs.paymentAmount.currency);
+      return Amounts.sum([zero, ...costs]).amount;
     });
 }
 
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