diff --git a/app/Http/Controllers/InfoController.php b/app/Http/Controllers/InfoController.php
index 8ebd5d6..80fe464 100644
--- a/app/Http/Controllers/InfoController.php
+++ b/app/Http/Controllers/InfoController.php
@@ -43,7 +43,7 @@ public function clock(Request $request){
             $event_txt = 'イベント情報を取得できませんでした';
         }
         // 時計表示モード
-        $clock_mode = $request->get('clock_mode') ?: env('CLOCK_DEFAULT_MODE','normal');
+        $clock_mode = $request->get('clock_mode') ?: config('ouranos.clockDefaultMode');
         $clock_mode_available = ['normal', 'right'];
         if(array_search($clock_mode, $clock_mode_available) === FALSE)abort(400,'Invalid clock mode.');
         return view('clock',compact('feed_txt','birth_text','event_txt','clock_mode'));
diff --git a/config/ouranos.php b/config/ouranos.php
index 1aeeab4..bfeec16 100644
--- a/config/ouranos.php
+++ b/config/ouranos.php
@@ -8,6 +8,7 @@
     'homeCardName' => env('HOME_CARD_NAME','yurikonanao_sunshinegirlofbeach'),
     'clockCardName' => env('CLOCK_CARD_NAME','shihokitazawa_therapistonboat'),
     'homeCardForce' => env('HOME_CARD_FORCE',false),
+    'clockDefaultMode' => env('CLOCK_DEFAULT_MODE','normal'),
 
     'googleAnalytics' => env('GOOGLE_ANALYTICS','UA-000000000-0'),