diff --git a/lib/box/index.js b/lib/box/index.js
index 9517850ecb..5abb808557 100644
--- a/lib/box/index.js
+++ b/lib/box/index.js
@@ -4,7 +4,6 @@ var _ = require('lodash');
 var File = require('./file');
 var util = require('hexo-util');
 var fs = require('hexo-fs');
-var prettyHrtime = require('pretty-hrtime');
 var crypto = require('crypto');
 var chalk = require('chalk');
 
@@ -291,7 +290,6 @@ Box.prototype._dispatch = function(item){
   var self = this;
   var ctx = this.context;
   var base = this.base;
-  var start = process.hrtime();
 
   // Skip processing files
   if (this.processingFiles[path]) return;
@@ -317,8 +315,7 @@ Box.prototype._dispatch = function(item){
     return Promise.method(processor.process).call(ctx, file).thenReturn(count + 1);
   }, 0).then(function(count){
     if (count){
-      var interval = prettyHrtime(process.hrtime(start));
-      ctx.log.debug('Processed in %s: %s', chalk.cyan(interval), chalk.magenta(path));
+      ctx.log.debug('Processed: %s', chalk.magenta(path));
     }
   }, function(err){
     ctx.log.error({err: err}, 'Process failed: %s', chalk.magenta(path));
diff --git a/lib/hexo/index.js b/lib/hexo/index.js
index 4dcfc58e73..079ebff3d8 100644
--- a/lib/hexo/index.js
+++ b/lib/hexo/index.js
@@ -20,7 +20,6 @@ var Router = require('./router');
 var Theme = require('../theme');
 var defaultConfig = require('./default_config');
 var loadDatabase = require('./load_database');
-var prettyHrtime = require('pretty-hrtime');
 
 var libDir = pathFn.dirname(__dirname);
 var sep = pathFn.sep;
@@ -301,20 +300,17 @@ Hexo.prototype._generate = function(options){
     // Run generators
     return Promise.reduce(keys, function(result, key){
       var generator = generators[key];
-      var start = process.hrtime();
 
       return generator.call(self, siteLocals).then(function(data){
-        var interval = prettyHrtime(process.hrtime(start));
+        log.debug('Generator: %s', chalk.magenta(key));
 
-        log.debug('Generator in %s: %s', chalk.cyan(interval), chalk.magenta(key));
-
-        return data ? result.concat(data) : data;
+        return data ? result.concat(data) : result;
       });
     }, []);
   })
+  // Add routes
   .each(function(item){
-    // Add routes
-    if (item.path == null) return;
+    if (typeof item !== 'object' || item.path == null) return;
 
     var path = route.format(item.path);
     var data = item.data;
diff --git a/lib/plugins/console/generate.js b/lib/plugins/console/generate.js
index 826ff0750b..de27a2b863 100644
--- a/lib/plugins/console/generate.js
+++ b/lib/plugins/console/generate.js
@@ -15,14 +15,12 @@ function generateConsole(args){
   function generateFile(path){
     var data = route.get(path);
     var dest = pathFn.join(publicDir, path);
-    var start = process.hrtime();
 
     // TODO: Retry when EMFILE error occurred
     return fs.ensureWriteStream(dest).then(function(stream){
       return pipeStream(data, stream);
     }).then(function(){
-      var interval = prettyHrtime(process.hrtime(start));
-      log.info('Generated in %s: %s', chalk.cyan(interval), chalk.magenta(path));
+      log.info('Generated: %s', chalk.magenta(path));
     });
   }
 
diff --git a/test/scripts/hexo/hexo.js b/test/scripts/hexo/hexo.js
index 0a5b791fed..11074b69ef 100644
--- a/test/scripts/hexo/hexo.js
+++ b/test/scripts/hexo/hexo.js
@@ -404,6 +404,23 @@ describe('Hexo', function(){
     });
   });
 
+  it('_generate() - return nothing in generator', function(){
+    hexo.extend.generator.register('test_nothing', function(){
+      //
+    });
+
+    hexo.extend.generator.register('test_normal', function(){
+      return {
+        path: 'bar',
+        data: 'bar'
+      };
+    });
+
+    return hexo._generate().then(function(){
+      return checkStream(route.get('bar'), 'bar');
+    });
+  });
+
   it('_generate() - validate locals');
 
   it('_generate() - do nothing if it\'s generating');