diff --git a/test/integration/cltv.js b/test/integration/cltv.js
index 2c39b2c..8bf1c4a 100644
--- a/test/integration/cltv.js
+++ b/test/integration/cltv.js
@@ -50,6 +50,7 @@ describe('bitcoinjs-lib (transactions w/ CLTV)', function () {
 
       const txb = new bitcoin.TransactionBuilder(regtest)
       txb.setLockTime(lockTime)
+      // Note: nSequence MUST be <= 0xfffffffe otherwise LockTime is ignored, and is immediately spendable.
       txb.addInput(unspent.txId, unspent.vout, 0xfffffffe)
       txb.addOutput(regtestUtils.RANDOM_ADDRESS, 7e4)
 
@@ -96,6 +97,7 @@ describe('bitcoinjs-lib (transactions w/ CLTV)', function () {
 
         const txb = new bitcoin.TransactionBuilder(regtest)
         txb.setLockTime(lockTime)
+        // Note: nSequence MUST be <= 0xfffffffe otherwise LockTime is ignored, and is immediately spendable.
         txb.addInput(unspent.txId, unspent.vout, 0xfffffffe)
         txb.addOutput(regtestUtils.RANDOM_ADDRESS, 7e4)
 
@@ -147,6 +149,7 @@ describe('bitcoinjs-lib (transactions w/ CLTV)', function () {
 
       const txb = new bitcoin.TransactionBuilder(regtest)
       txb.setLockTime(lockTime)
+      // Note: nSequence MUST be <= 0xfffffffe otherwise LockTime is ignored, and is immediately spendable.
       txb.addInput(unspent.txId, unspent.vout, 0xfffffffe)
       txb.addOutput(regtestUtils.RANDOM_ADDRESS, 8e4)
 
@@ -191,6 +194,7 @@ describe('bitcoinjs-lib (transactions w/ CLTV)', function () {
 
       const txb = new bitcoin.TransactionBuilder(regtest)
       txb.setLockTime(lockTime)
+      // Note: nSequence MUST be <= 0xfffffffe otherwise LockTime is ignored, and is immediately spendable.
       txb.addInput(unspent.txId, unspent.vout, 0xfffffffe)
       txb.addOutput(regtestUtils.RANDOM_ADDRESS, 1e4)