diff --git a/hikyuu/data/mysql_upgrade/0022.sql b/hikyuu/data/mysql_upgrade/0022.sql
index ad72217d6..3400c2695 100644
--- a/hikyuu/data/mysql_upgrade/0022.sql
+++ b/hikyuu/data/mysql_upgrade/0022.sql
@@ -1,4 +1,4 @@
-DELETE FROM `hku_base`.`stkWeight`;
+DELETE FROM `hku_base`.`stkweight`;
 UPDATE `hku_base`.`coderuletype` SET `codepre`=51 WHERE `codepre`=510 AND `marketid`=1;
 UPDATE `hku_base`.`coderuletype` SET `codepre`=50 WHERE `codepre`=500 AND `marketid`=1;
 UPDATE `hku_base`.`coderuletype` SET `codepre`=20 WHERE `codepre`=200 AND `marketid`=2;