diff --git a/lib/server.js b/lib/server.js
index e4218bf..e79553b 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -743,11 +743,11 @@ WalletService.prototype.getBalance = function(opts, cb) {
 
     balance.byAddress = _.values(byAddress);
 
-    self._computeBytesToSendMax(utxos, function(err, sizeInBytes) {
+    self._computeBytesToSendMax(utxos, function(err, size) {
       if (err) {
         log.error('Could not compute fees needed to transfer max amount', err);
       }
-      balance.totalBytesToSendMax = sizeInBytes || 0;
+      balance.totalBytesToSendMax = size || 0;
       return cb(null, balance);
     });
   });
diff --git a/package.json b/package.json
index 4e837c3..00ae69c 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "bitcore-wallet-service",
   "description": "A service for Mutisig HD Bitcoin Wallets",
   "author": "BitPay Inc",
-  "version": "0.0.46",
+  "version": "0.0.47",
   "keywords": [
     "bitcoin",
     "copay",
@@ -20,7 +20,7 @@
   "dependencies": {
     "async": "^0.9.0",
     "bitcore": "^0.12.9",
-    "bitcore-wallet-utils": "^0.0.22",
+    "bitcore-wallet-utils": "^0.0.23",
     "body-parser": "^1.11.0",
     "coveralls": "^2.11.2",
     "email-validator": "^1.0.1",