diff --git a/clients/tests/web/test/tb04-simple-lightning-latch.test.js b/clients/tests/web/test/tb04-simple-lightning-latch.test.js
index 3b0ce3c6..744815b0 100644
--- a/clients/tests/web/test/tb04-simple-lightning-latch.test.js
+++ b/clients/tests/web/test/tb04-simple-lightning-latch.test.js
@@ -480,7 +480,7 @@ describe('TB04 - Receiver tries to transfer invoice amount to another invoice be
 
         expect(hashPreImage).toEqual(paymentHash.hash);
 
-        const paymentHashSecond = "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"
+        const paymentHashSecond = "4c616c5c4b2c2342c832e50a1584d8c550fe238e08e7be7c9af636ecef9136f2"
         const invoiceSecond = await generateInvoice(paymentHashSecond, amount);
   
         try {
@@ -696,7 +696,7 @@ describe('Coin receiver creates a non hold invoice, and sends to sender (i.e. an
 
         const paymentHash = await mercuryweblib.paymentHash(clientConfig, wallet1.name, statechainId);
 
-        const paymentHashSecond = "1f1e1d1c1b1a19181716151413121110100f0e0d0c0b0a09080706050403020100"
+        const paymentHashSecond = "b1f55a2f2eabb08ed9d6e15a053a6ac84d04d1c017de5a42caaec98b8d2ff738"
         const invoiceSecond = await generateInvoice(paymentHashSecond, amount);
 
         const isInvoiceValid = await mercuryweblib.verifyInvoice(clientConfig, paymentHash.batchId, invoiceSecond.payment_request);