diff --git a/app/Http/Controllers/Mobile/CourseController.php b/app/Http/Controllers/Mobile/CourseController.php
index d755999..42f6e52 100755
--- a/app/Http/Controllers/Mobile/CourseController.php
+++ b/app/Http/Controllers/Mobile/CourseController.php
@@ -675,8 +675,8 @@ class CourseController extends CommonController
         CourseContentCheck::create([
             'course_id' => $all['course_id'],
             'user_id' => $this->getUserId(),
-            'longitude' => $all['longitude'],
-            'latitude' => $all['latitude'],
+            'longitude' => $all['longitude']??'',
+            'latitude' => $all['latitude']??'',
         ]);
         return $this->success('课程签到成功');
     }