diff --git a/app/Http/Controllers/Mobile/CourseController.php b/app/Http/Controllers/Mobile/CourseController.php
index 521c0f6..6b0b34a 100755
--- a/app/Http/Controllers/Mobile/CourseController.php
+++ b/app/Http/Controllers/Mobile/CourseController.php
@@ -815,8 +815,8 @@ class CourseController extends CommonController
         if ($validator->fails()) {
             return $this->fail([ResponseCode::ERROR_PARAMETER, implode(',', $validator->errors()->all())]);
         }
-        $startDate = Carbon::parse($all['month'])->startOfMonth();
-        $endDate = Carbon::parse($all['month'])->endOfMonth();
+        $startDate = $all['month'] . '-01';
+        $endDate = date('Y-m-t', strtotime($startDate));
         dd($startDate,$endDate);