diff --git a/script/3.4/schema/1.update_project_correlation.sql b/script/3.4/schema/1.update_project_correlation.sql
index 1bfbaa1..ab5c02c 100644
--- a/script/3.4/schema/1.update_project_correlation.sql
+++ b/script/3.4/schema/1.update_project_correlation.sql
@@ -1,11 +1,12 @@
 alter table project_correlation
     add "maintenance_end" timestamp with time zone;
 
-comment on column project_correlation."maintenanceETime" is '维保结束时间';
 
 alter table project_correlation
     add "maintenance_start" timestamp with time zone;
 
-comment on column project_correlation."maintenanceSTime" is '维保开始时间';
+
+comment on column project_correlation."maintenance_end" is '维保结束时间';
+comment on column project_correlation."maintenance_start" is '维保开始时间';