diff --git a/packages/taler-wallet-core/src/operations/exchanges.ts b/packages/taler-wallet-core/src/operations/exchanges.ts
index c0373704a..5d120ccbd 100644
--- a/packages/taler-wallet-core/src/operations/exchanges.ts
+++ b/packages/taler-wallet-core/src/operations/exchanges.ts
@@ -570,7 +570,7 @@ export async function updateExchangeFromUrl(
         .mktx((x) => [x.exchanges, x.exchangeDetails])
         .runReadWrite(async (tx) => {
           let exchange = await tx.exchanges.get(canonUrl);
-          const exchangeDetails = await getExchangeDetails(tx, baseUrl);
+          const exchangeDetails = await getExchangeDetails(tx, canonUrl);
           return { exchange, exchangeDetails };
         });
       if (!exchange) {