diff --git a/src/backend/src/main/java/com/zioinfo/kintex/system/message/SysMessageMapper.java b/src/backend/src/main/java/com/zioinfo/kintex/system/message/SysMessageMapper.java
index 5fea5fe..c867af9 100644
--- a/src/backend/src/main/java/com/zioinfo/kintex/system/message/SysMessageMapper.java
+++ b/src/backend/src/main/java/com/zioinfo/kintex/system/message/SysMessageMapper.java
@@ -15,8 +15,8 @@ public interface SysMessageMapper {
     @Select("SELECT msg_code AS \"msgCode\", locale, category, title, template, use_yn AS \"useYn\", "
             + "to_char(updated_at,'YYYY-MM-DD\"T\"HH24:MI:SS') AS \"updatedAt\" FROM sys_message "
             + "WHERE tenant_id = #{tenantId} "
-            + "AND (#{category} IS NULL OR category = #{category}) "
-            + "AND (#{locale} IS NULL OR locale = #{locale}) "
+            + "AND (#{category}::text IS NULL OR category = #{category}) "
+            + "AND (#{locale}::text IS NULL OR locale = #{locale}) "
             + "ORDER BY category, msg_code, locale")
     List<Map<String, Object>> findAll(@Param("tenantId") String tenantId,
                                       @Param("category") String category,
@@ -45,7 +45,7 @@ public interface SysMessageMapper {
     int upsert(Map<String, Object> p);
 
     @Delete("DELETE FROM sys_message WHERE tenant_id = #{tenantId} AND msg_code = #{msgCode} "
-            + "AND (#{locale} IS NULL OR locale = #{locale})")
+            + "AND (#{locale}::text IS NULL OR locale = #{locale})")
     int delete(@Param("tenantId") String tenantId,
                @Param("msgCode") String msgCode,
                @Param("locale") String locale);