diff --git a/src/main/java/com/mini/mybigscreen/biz/controller/ChartInfoController.java b/src/main/java/com/mini/mybigscreen/biz/controller/ChartInfoController.java
index e664867..4e605f4 100644
--- a/src/main/java/com/mini/mybigscreen/biz/controller/ChartInfoController.java
+++ b/src/main/java/com/mini/mybigscreen/biz/controller/ChartInfoController.java
@@ -51,7 +51,7 @@ public class ChartInfoController {
                     .notIn(ChartInfo::getChartId, configs.stream()
                             .map(ChartConfig::getChartId)
                             .toList())
-                    .set(ChartInfo::getSort, null);
+                    .set(ChartInfo::getSort, -1);
             chartInfoService.update(updateWrapper);
         }
         return Result.success(new Message("配置保存成功", 200));