diff --git a/eth2explorer.html b/eth2explorer.html
index 9fec43c..32f70a1 100644
--- a/eth2explorer.html
+++ b/eth2explorer.html
@@ -46,7 +46,7 @@ <h3> Latest 20 blocks </h3>
     <!-- Web3 -->
     <script src="https://cdn.jsdelivr.net/gh/ethereum/web3.js/dist/web3.min.js"></script>
     <script> //https://v2.scrimba.com/learn-javascript-c0v/~07 https://docs.web3js.org/guides/wallet/web3_modal_guide/#smart-contract-interaction
-      var provider = 'https://'; //Your Infura Endpoint
+      var provider = 'https://'; //Your Infura Endpoint https://community.infura.io/t/web3-js-how-to-retrieve-the-balance-of-an-erc-20-token/5232
       var web3Provider = new Web3.providers.HttpProvider(provider);
       var web3 = new Web3(web3Provider);
       var latestBlock = web3.eth.blockNumber;