diff --git a/app/Console/Tasks/SyncLearningTask.php b/app/Console/Tasks/SyncLearningTask.php
index e1c5f639..7ff9c90f 100644
--- a/app/Console/Tasks/SyncLearningTask.php
+++ b/app/Console/Tasks/SyncLearningTask.php
@@ -69,7 +69,7 @@ class SyncLearningTask extends Task
 
         } else {
 
-            $dbLearning->duration += $cacheLearning->duration;
+            $dbLearning->duration = $cacheLearning->duration;
             $dbLearning->position = $cacheLearning->position;
             $dbLearning->active_time = $cacheLearning->active_time;
 
diff --git a/app/Services/Logic/Chapter/Learning.php b/app/Services/Logic/Chapter/Learning.php
index b3a003d6..78aceedd 100644
--- a/app/Services/Logic/Chapter/Learning.php
+++ b/app/Services/Logic/Chapter/Learning.php
@@ -23,9 +23,9 @@ class Learning extends LogicService
     {
         $post = $this->request->getPost();
 
-        $chapter = $this->checkChapter($id);
+        $chapter = $this->checkChapterCache($id);
 
-        $user = $this->getLoginUser();
+        $user = $this->getLoginUser(true);
 
         $validator = new LearningValidator();
 
diff --git a/app/Services/Sync/Learning.php b/app/Services/Sync/Learning.php
index 868e004a..2acfe430 100644
--- a/app/Services/Sync/Learning.php
+++ b/app/Services/Sync/Learning.php
@@ -21,10 +21,6 @@ class Learning extends AppService
      */
     protected $lifetime = 86400;
 
-    /**
-     * @param LearningModel $learning
-     * @param int $intervalTime
-     */
     public function addItem(LearningModel $learning, $intervalTime = 10)
     {
         $cache = $this->getCache();