diff --git a/clients/apps/nodejs/test/tb04-simple-lightning-latch.mjs b/clients/apps/nodejs/test/tb04-simple-lightning-latch.mjs
index 1d296b3b..93631765 100644
--- a/clients/apps/nodejs/test/tb04-simple-lightning-latch.mjs
+++ b/clients/apps/nodejs/test/tb04-simple-lightning-latch.mjs
@@ -3,7 +3,7 @@ import client_config from '../client_config.js';
 import mercurynodejslib from 'mercurynodejslib';
 import { CoinStatus } from 'mercurynodejslib/coin_enum.js';
 import crypto from 'crypto';
-import { createWallet, removeDatabase, getnewaddress, generateBlock, depositCoin } from './test-utils.mjs';
+import { createWallet, depositCoin, generateInvoice } from '../test_utils.js';
 
 describe('TB04 - Lightning Latch', function() {
   this.timeout(30000);
@@ -312,6 +312,8 @@ describe('TB04 - Lightning Latch', function() {
 
       const paymentHash = await mercurynodejslib.paymentHash(clientConfig, wallet_1_name, coin.statechain_id);
 
+      const invoice = await generateInvoice(paymentHash.hash, amount);
+
       const transferAddress = await mercurynodejslib.newTransferAddress(clientConfig, wallet_2_name, null);
 
       await mercurynodejslib.transferSend(clientConfig, wallet_1_name, coin.statechain_id, transferAddress.transfer_receive, false, paymentHash.batchId);
diff --git a/clients/apps/nodejs/test_utils.js b/clients/apps/nodejs/test_utils.js
index e6972cc0..211a3022 100644
--- a/clients/apps/nodejs/test_utils.js
+++ b/clients/apps/nodejs/test_utils.js
@@ -100,6 +100,17 @@ const connectElectr = async () => {
     await exec("docker network connect mercurylayer_default mercurylayer_electrs_1");
 }
 
+async function generateInvoice(paymentHash, amountInSats) {
+
+    const generateInvoiceCommand = `docker exec $(docker ps -qf "name=mercurylayer_alice_1") lncli addinvoice ${paymentHash} --amt ${amountInSats}`;
+    const { stdout, stderr } = await exec(generateInvoiceCommand);
+    if (stderr) {
+        console.error('Error:', stderr);
+        return null;
+    }
+    return stdout.trim();
+}
+
 module.exports = { 
     removeDatabase, 
     getDatabase, 
@@ -111,5 +122,6 @@ module.exports = {
     connectElectr, 
     disconnectElectr, 
     connectMercuryServer, 
-    disconnectMercuryServer 
+    disconnectMercuryServer ,
+    generateInvoice
 };