diff --git a/scheduler.php b/scheduler.php
index e1e3690d..a4549786 100644
--- a/scheduler.php
+++ b/scheduler.php
@@ -90,9 +90,6 @@ $scheduler->php($script, $bin, ['--task' => 'sync_app_info', '--action' => 'main
 $scheduler->php($script, $bin, ['--task' => 'sync_tag_stat', '--action' => 'main'])
     ->daily(3, 17);
 
-$scheduler->php($script, $bin, ['--task' => 'sync_course_stat', '--action' => 'main'])
-    ->daily(3, 19);
-
 $scheduler->php($script, $bin, ['--task' => 'close_question', '--action' => 'main'])
     ->daily(3, 23);