diff --git a/packages/taler-harness/src/integrationtests/test-payment.ts b/packages/taler-harness/src/integrationtests/test-payment.ts
index 66d10f996..b4c1f0cae 100644
--- a/packages/taler-harness/src/integrationtests/test-payment.ts
+++ b/packages/taler-harness/src/integrationtests/test-payment.ts
@@ -53,7 +53,7 @@ export async function runPaymentTest(t: GlobalTestState) {
   // Test JSON normalization of contract terms: Does the wallet
   // agree with the merchant?
   const order2 = {
-    summary: "Testing “unicode” characters",
+    summary: "Testing “unicode” characters: 😁😱😇🥺🫦",
     amount: "TESTKUDOS:5",
     fulfillment_url: "taler://fulfillment-success/thx",
   };