diff --git a/lib/utils/utils.js b/lib/utils/utils.js
index 2faea985..193b142d 100644
--- a/lib/utils/utils.js
+++ b/lib/utils/utils.js
@@ -1,5 +1,6 @@
 let http = require('follow-redirects').http;
 let https = require('follow-redirects').https;
+const {canonicalHost} = require('./host');
 
 const balanceRegex = /([0-9]+) ?([a-zA-Z]*)/;
 
@@ -296,7 +297,7 @@ function buildUrl (protocol, host, port){
 function buildUrlFromConfig (configObj){
   if(!configObj) throw new Error('[utils.buildUrlFromConfig]: config object must cannot be null');
   if(!configObj.host) throw new Error('[utils.buildUrlFromConfig]: object must contain a \'host\' property');
-  return this.buildUrl(configObj.protocol, configObj.host, configObj.port);
+  return this.buildUrl(configObj.protocol, canonicalHost(configObj.host), configObj.port);
 }
 
 function getWeiBalanceFromString(balanceString, web3){