diff --git a/backend/app/Http/Controllers/Api/MeetingsController.php b/backend/app/Http/Controllers/Api/MeetingsController.php
index f117a216..3c0d7c7d 100644
--- a/backend/app/Http/Controllers/Api/MeetingsController.php
+++ b/backend/app/Http/Controllers/Api/MeetingsController.php
@@ -813,7 +813,7 @@ class MeetingsController extends Controller {
             $meeting->save();
 
             // 子供達を知らせます。
-            if (null !== ($fr = FatherRelation::where('father_id', (int)session()->get('fathers')['id'])->get())) {
+            if (null !== ($fr = FatherRelation::where('father_id', (int)$meeting->id)->get())) {
                 foreach ($fr as $f) {
                     if (null !== ($meeting = MeetingApprovals::where('meeting_id', (int)$meeting_id)->where('child_id', $f->child_id)->whereNotNull('approval_at')->first())) {
                         if (null !== ($child = Child::where('id', $f->child_id)->first())) {