diff --git a/lib/addresses.js b/lib/addresses.js
index 64b302e..cfb3926 100644
--- a/lib/addresses.js
+++ b/lib/addresses.js
@@ -158,9 +158,8 @@ AddressController.prototype.utxo = function(req, res) {
 AddressController.prototype.multiutxo = function(req, res) {
   var self = this;
 
-  var sep = ',';
-
   var addresses;
+
   if (_.isArray(req.addrs)) {
     addresses = _.uniq(req.addrs);
   } else {
@@ -168,8 +167,11 @@ AddressController.prototype.multiutxo = function(req, res) {
   }
 
   var addressesLeft = addresses.length;
+  var startedWriting = false;
   res.write('[');
 
+  var sep = ',';
+
   async.eachLimit(addresses, 4, function(addr, next) {
 
     self._address.getAddressUnspentOutputs(addr, {}, function(err, utxos) {
@@ -178,16 +180,21 @@ AddressController.prototype.multiutxo = function(req, res) {
         return next(err);
       }
 
-      for(var i = 0; i < utxos.length; i++) {
+      if (addressesLeft-- > 0 && utxos.length > 0 && startedWriting) {
+        res.write(sep);
+      }
 
-        if (--addressesLeft <= 0 && utxos[i] === utxos[utxos.length - 1] ) {
+      for(var i = 0; i < utxos.length; i++) {
+        startedWriting = true;
+        if (utxos.length - 1 === i) {
           sep = '';
         }
-
         res.write(JSON.stringify(self.transformUtxo(utxos[i])) + sep);
       }
 
+      sep = ',';
       next();
+
     });
 
   }, function(err) {