diff --git a/optuna_dashboard/static/components/StudyDetail.tsx b/optuna_dashboard/static/components/StudyDetail.tsx
index f8a2114d..7628545f 100644
--- a/optuna_dashboard/static/components/StudyDetail.tsx
+++ b/optuna_dashboard/static/components/StudyDetail.tsx
@@ -118,6 +118,7 @@ export const StudyDetail: FC = () => {
     }, reloadInterval * 1000)
     return () => clearInterval(intervalId)
   }, [reloadInterval, studyDetail])
+  // TODO(chenghuzi): Reduce the number of calls to setInterval and clearInterval.
 
   const title = studyDetail !== null ? studyDetail.name : `Study #${studyId}`
   const trials: Trial[] = studyDetail !== null ? studyDetail.trials : []