diff --git a/apps/api/modules/like/actions/actions.class.php b/apps/api/modules/like/actions/actions.class.php
index 85b9198..8c654a3 100644
--- a/apps/api/modules/like/actions/actions.class.php
+++ b/apps/api/modules/like/actions/actions.class.php
@@ -55,31 +55,30 @@ public function executePost(sfWebRequest $request)
     $this->forward400If($alreadyLike, 'It has already been registered');
 
     $fromMember = $this->getUser()->getMember();
-    $baseUrl = $request->getRelativeUrlRoot();
     switch ($foreignTable)
     {
       case 'A':
         $this->forward400Unless($activity = Doctrine::getTable('ActivityData')->find($foreignId));
         $timelineId = $activity->in_reply_to_activity_id ? $activity->in_reply_to_activity_id : $activity->id;
-        $url = $baseUrl.'/timeline/show/id/'.$timelineId;
+        $url = '/timeline/show/id/'.$timelineId;
         break;
       case 'D':
-        $url = $baseUrl.'/diary/'.$foreignId;
+        $url = '/diary/'.$foreignId;
         break;
       case 'd':
         $diaryComment = Doctrine::getTable('DiaryComment')->findOneById($foreignId);
         $this->forward400Unless($diaryComment, 'diary comment does not exist.');
-        $url = $baseUrl.'/diary/'.$diaryComment->getDiaryId();
+        $url = '/diary/'.$diaryComment->getDiaryId();
         break;
       case 'e':
         $eventComment = Doctrine::getTable('CommunityEventComment')->findOneById($foreignId);
         $this->forward400Unless($eventComment, 'event comment does not exist.');
-        $url = $baseUrl.'/communityEvent/'.$eventComment->getCommunityEventId();
+        $url = '/communityEvent/'.$eventComment->getCommunityEventId();
         break;
       case 't':
         $topicComment = Doctrine::getTable('CommunityTopicComment')->findOneById($foreignId);
         $this->forward400Unless($topicComment, 'topic comment does not exist.');
-        $url = $baseUrl.'/communityTopic/'.$topicComment->getCommunityTopicId();
+        $url = '/communityTopic/'.$topicComment->getCommunityTopicId();
         break;
       default :
         $url = '#';
diff --git a/data/fixtures/000_revision.yml b/data/fixtures/000_revision.yml
index 1b108c6..e0c27ff 100644
--- a/data/fixtures/000_revision.yml
+++ b/data/fixtures/000_revision.yml
@@ -1,4 +1,4 @@
 SnsConfig:
   op_like_plugin_current_revision:
     name: "opLikePlugin_revision"
-    value: 3
+    value: 4
diff --git a/data/migrations/004_change_notification_url.php b/data/migrations/004_change_notification_url.php
new file mode 100644
index 0000000..39fb242
--- /dev/null
+++ b/data/migrations/004_change_notification_url.php
@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * @package    opLikePlugin
+ * @subpackage migration
+ * @author     Kaoru Nishizoe <nishizoe@tejimaya.com>
+ */
+class opLikePluginMigrationVersion4 extends opMigration
+{
+  /*
+   * 下記の条件に一致する通知URLを一括で変更:
+   *   * url に '/timeline/', '/diary/', '/communityEvent/', '/communityTopic/' が含まれ、
+   *     且つ、これらの前に'/'で始まる何らかの文字列が含まれているもの
+   */
+  public function postUp()
+  {
+    $notificationObject = Doctrine::getTable('MemberConfig')
+      ->findByName('notification_center');
+
+    if ($notificationObject)
+    {
+      foreach ($notificationObject as $object)
+      {
+        $notifications = unserialize($object->getValue());
+
+        $newNotifications = array();
+        foreach ($notifications as $notificationItem)
+        {
+          $url = $notificationItem['url'];
+          if ($url)
+          {
+            if (preg_match('/(\/timeline\/show\/id|\/diary|\/communityEvent|\/communityTopic)\/[0-9]+/', $url, $m))
+            {
+              $url = $m[0];
+              $notificationItem['url'] = $url;
+            }
+          }
+          array_push($newNotifications, $notificationItem);
+        }
+
+        $object->setValue(serialize($newNotifications));
+        $object->save();
+        $object->free(true);
+      }
+    }
+
+  }
+}