diff --git a/btcOperator.js b/btcOperator.js
index ed967b9..ff86fb9 100644
--- a/btcOperator.js
+++ b/btcOperator.js
@@ -1,4 +1,4 @@
-(function (EXPORTS) { //btcOperator v1.1.2
+(function (EXPORTS) { //btcOperator v1.1.2a
     /* BTC Crypto and API Operator */
     const btcOperator = EXPORTS;
 
@@ -703,12 +703,15 @@
     btcOperator.checkIfSameTx = function (tx1, tx2) {
         tx1 = deserializeTx(tx1);
         tx2 = deserializeTx(tx2);
+        //compare input and output length
         if (tx1.ins.length !== tx2.ins.length || tx1.outs.length !== tx2.outs.length)
             return false;
+        //compare inputs
         for (let i = 0; i < tx1.ins.length; i++)
             if (tx1.ins[i].outpoint.hash !== tx2.ins[i].outpoint.hash || tx1.ins[i].outpoint.index !== tx2.ins[i].outpoint.index)
                 return false;
-        for (let i = 0; i < tx2.ins.length; i++)
+        //compare outputs
+        for (let i = 0; i < tx1.outs.length; i++)
             if (tx1.outs[i].value !== tx2.outs[i].value || Crypto.util.bytesToHex(tx1.outs[i].script.buffer) !== Crypto.util.bytesToHex(tx2.outs[i].script.buffer))
                 return false;
         return true;