diff --git a/src/main/resources/mapper/pms/QcMapper.xml b/src/main/resources/mapper/pms/QcMapper.xml
index 6c818d84..f2803d10 100644
--- a/src/main/resources/mapper/pms/QcMapper.xml
+++ b/src/main/resources/mapper/pms/QcMapper.xml
@@ -2405,7 +2405,7 @@
             part_desc = #{partDesc},
             detail_flag = 'Y',
             state = '未开始',
-            action_date = '',
+            action_date = null,
             action_by = ''
         WHERE inspection_no = #{inspectionNo} and site = #{site} and bu_no = #{buNo}
     </update>