diff --git a/app/Http/Controllers/DeviceController.php b/app/Http/Controllers/DeviceController.php
index 2498734..b0513be 100644
--- a/app/Http/Controllers/DeviceController.php
+++ b/app/Http/Controllers/DeviceController.php
@@ -250,7 +250,7 @@ class DeviceController extends Controller
             }
         }
         $device = Device::find($deviceId);
-        $dataList = null;
+        $modelQuery = null;
         $getArr = [];
         switch ($device->type) {
             case DeviceType::Meteorological://气象设备