diff --git a/frontend/app/routes/home.users.create/route.tsx b/frontend/app/routes/home.users.create/route.tsx
index 05709eda..c0dfa38f 100644
--- a/frontend/app/routes/home.users.create/route.tsx
+++ b/frontend/app/routes/home.users.create/route.tsx
@@ -108,6 +108,7 @@ const UserCreatePage = () => {
 				setCounts(counts - 1);
 			}
 		}, 1000);
+		// コンポーネントがアンマウントした時、タイマーをクリアする
 		return () => clearInterval(countDown);
 	}, [counts]);