diff --git a/extension/lite/todo/ext/lang/zh-cn/lite.php b/extension/lite/todo/ext/lang/zh-cn/lite.php
index 34e05cbbc0..7b162f90ef 100644
--- a/extension/lite/todo/ext/lang/zh-cn/lite.php
+++ b/extension/lite/todo/ext/lang/zh-cn/lite.php
@@ -1,7 +1,5 @@
 <?php
 $lang->todo->typeList['task'] = '任务';
 
-$lang->effort->common = '日志';
-
 unset($lang->todo->typeList['bug']);
 unset($lang->todo->typeList['testtask']);