diff --git a/openhis-server-new/openhis-application/src/main/resources/mapper/doctorstation/DoctorStationAdviceAppMapper.xml b/openhis-server-new/openhis-application/src/main/resources/mapper/doctorstation/DoctorStationAdviceAppMapper.xml
index 1ade4844..e80c7f77 100755
--- a/openhis-server-new/openhis-application/src/main/resources/mapper/doctorstation/DoctorStationAdviceAppMapper.xml
+++ b/openhis-server-new/openhis-application/src/main/resources/mapper/doctorstation/DoctorStationAdviceAppMapper.xml
@@ -647,7 +647,7 @@
         AND T1.refund_device_id IS NULL
         ORDER BY T1.status_enum)
         UNION ALL
-        (SELECT CASE WHEN T1.category_enum = 4 THEN 6 ELSE COALESCE(T1.category_enum, 3) END AS advice_type,
+        (SELECT CASE WHEN T1.category_enum = 4 THEN 6 ELSE 3 END AS advice_type,
         T1.id AS request_id,
         T1.id || '-3' AS unique_key,
         '' AS prescription_no,