diff --git a/app/controllers/blocks.js b/app/controllers/blocks.js
index 0b471cee..b67d8f3c 100644
--- a/app/controllers/blocks.js
+++ b/app/controllers/blocks.js
@@ -106,11 +106,16 @@ exports.list = function(req, res) {
       res.status(500).send(err);
     }
     else {
+      var blockList = [];
       var l = blocks.length;
       var limit = parseInt(req.query.limit || l);
       if (l < limit) limit = l;
 
-      async.mapSeries(blocks,
+      for(var i=0;i<limit;i++) {
+        blockList.push(blocks[i]);
+      }
+
+      async.mapSeries(blockList,
         function(b, cb) {
           getBlock(b.hash, function(err, info) {
             return cb(err,{
diff --git a/lib/BlockDb.js b/lib/BlockDb.js
index a80b5410..4cb79573 100644
--- a/lib/BlockDb.js
+++ b/lib/BlockDb.js
@@ -124,7 +124,7 @@ function spec(b) {
   // .has() return true orphans also
   BlockDb.prototype.has = function(hash, cb) {
     var k = PREV_PREFIX + hash;
-    db.get(k, function (err,val) {
+    db.get(k, function (err) {
       var ret = true;
       if (err && err.notFound) {
         err = null;
diff --git a/public/src/js/controllers/index.js b/public/src/js/controllers/index.js
index d8b86473..398b2465 100644
--- a/public/src/js/controllers/index.js
+++ b/public/src/js/controllers/index.js
@@ -29,8 +29,7 @@ angular.module('insight.system').controller('IndexController',
     }
   });
 
-  socket.on('block', function(block) {
-    var blockHash = block.toString();
+  socket.on('block', function() {
     _getBlocks();
   });