diff --git a/app/Http/Controllers/Admin/UserController.php b/app/Http/Controllers/Admin/UserController.php
index 8cd9de3..03a0307 100755
--- a/app/Http/Controllers/Admin/UserController.php
+++ b/app/Http/Controllers/Admin/UserController.php
@@ -516,14 +516,14 @@ class UserController extends BaseController
         $schoolmateCourseTypeStats = [];
         $multiCourseTypeSchoolmateTotal = 0;
         if (isset($all['is_schoolmate']) && (int) $all['is_schoolmate'] === 1 && empty($all['is_export'])) {
-            // 当前筛选命中的全部校友；仅统计付费课程体系，按报名关联去重，不受分页影响。
+            // 当前筛选命中的全部校友；仅统计具体付费课程的报名，按所属体系和校友去重，不受分页影响。
             $schoolmates = (clone $list)->reorder()->select('users.id')->toBase();
             $registrations = CourseSign::query()
                 ->join('courses', 'courses.id', '=', 'course_signs.course_id')
                 ->join('course_types', 'course_types.id', '=', 'courses.type')
                 ->whereNull('courses.deleted_at')
                 ->whereNull('course_types.deleted_at')
-                ->where('course_types.is_fee', 1)
+                ->where('courses.is_fee', 1)
                 ->whereIn('course_signs.user_id', $schoolmates);
             $schoolmateCourseTypeStats = (clone $registrations)
                 ->select('course_types.id', 'course_types.name')