diff --git a/app/assets/javascripts/angularjs/likes.js.coffee b/app/assets/javascripts/angularjs/likes.js.coffee
index e62de7c..49200ae 100644
--- a/app/assets/javascripts/angularjs/likes.js.coffee
+++ b/app/assets/javascripts/angularjs/likes.js.coffee
@@ -16,12 +16,12 @@
     $http.post url
     .success (res)->
       if res.success
-        $scope.count += 1
         $scope.like = $cookies.like = res.id
+        $scope.count = res.count
 
   $scope.cancel = ->
-    $http.delete url + "/" + $scope.like
+    $http.delete url + "/" + $scope.like, (res)->
+      $scope.count = res.count
     # anyway, clear cookie
     delete $cookies["like"]
     $scope.like = null
-    $scope.get_count()
diff --git a/app/controllers/archives_controller.rb b/app/controllers/archives_controller.rb
index 79ecfcd..eeb7764 100644
--- a/app/controllers/archives_controller.rb
+++ b/app/controllers/archives_controller.rb
@@ -51,7 +51,7 @@ def build_summary(post)
       type: post.type,
       created_at: format_date(post.created_at),
       id: post.id.to_s,
-      liked_count: post.likes.size,
+      liked_count: post.liked_count,
       visited_count: post.visited_count,
       labels: post.labels_content
     }
diff --git a/app/controllers/likes_controller.rb b/app/controllers/likes_controller.rb
index c44d80a..cc50811 100644
--- a/app/controllers/likes_controller.rb
+++ b/app/controllers/likes_controller.rb
@@ -3,7 +3,7 @@ class LikesController < ApplicationController
 
   def index
     post = Post.find( params[:blog_id] )
-    render :json=> { success: true, count: post.likes.size }
+    render :json=> { success: true, count: post.liked_count }
   end
 
   def create
@@ -11,9 +11,9 @@ def create
     like = Like.new
     like.post = post
     if like.save
-      render :json=> { success: true, id: like.id.to_s }
+      render :json=> { success: true, id: like.id.to_s, count: post.liked_count }
     else
-      render :json=> { success: false }
+      render :json=> { success: false, count: post.liked_count }
     end
   end
 
@@ -21,9 +21,9 @@ def destroy
     post = Post.find( params[:blog_id] )
     like = post.likes.find(params[:id])
     if like.destroy
-      render :json=> { success: true }
+      render :json=> { success: true, count: post.liked_count }
     else
-      render :json=> { success: false }
+      render :json=> { success: false, count: post.liked_count }
     end
   end
 end
diff --git a/app/models/post.rb b/app/models/post.rb
index 25370f5..0504903 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -41,4 +41,8 @@ def sub_content
   def labels_content
     self.labels.collect { |label| label.name }.join(", ")
   end
+
+  def liked_count
+    self.likes.size
+  end
 end