1 files changed, 6 insertions, 1 deletions
diff --git a/packages/taler-util/src/qr.ts b/packages/taler-util/src/qr.ts
index 372291250..4d90ccf14 100644
--- a/packages/taler-util/src/qr.ts
+++ b/packages/taler-util/src/qr.ts
@@ -34,6 +34,9 @@ function encodePaytoAsSwissQrBill(paytoUri: string): EncodeResult {
     return { type: "skip" };
   }
   const amountStr = parsedPayto.params["amount"];
+  if (amountStr === undefined) {
+    return { type: "skip" };
+  }
   const iban = parsedPayto.targetPath;
   const countryCode = iban.slice(0, 2);
   const lines = [
@@ -105,7 +108,9 @@ function encodePaytoAsEpcQr(paytoUri: string): EncodeResult {
     "", // optional BIC
     parsedPayto.params["receiver-name"], // Beneficiary name
     parsedPayto.targetPath, // Beneficiary IBAN
-    `${Amounts.currencyOf(amountStr)}${Amounts.stringifyValue(amountStr, 2)}`, // Amount
+    amountStr !== undefined
+      ? `${Amounts.currencyOf(amountStr)}${Amounts.stringifyValue(amountStr, 2)}`
+      : "", // Amount (optional)
     "", // AT-44 Purpose
     parsedPayto.params["message"], // AT-05 Unstructured remittance information
   ];