diff --git a/optuna_dashboard/ts/components/App.tsx b/optuna_dashboard/ts/components/App.tsx
index 3f52e96b..e5cc408d 100644
--- a/optuna_dashboard/ts/components/App.tsx
+++ b/optuna_dashboard/ts/components/App.tsx
@@ -107,11 +107,7 @@ export const App: FC = () => {
                 />
                 <Route
                   path={URL_PREFIX + "/studies/:studyId"}
-                  element={
-                    <StudyDetail
-                      toggleColorMode={toggleColorMode}
-                    />
-                  }
+                  element={<StudyDetail toggleColorMode={toggleColorMode} />}
                 />
                 <Route
                   path={URL_PREFIX + "/compare-studies"}
diff --git a/optuna_dashboard/ts/components/StudyDetail.tsx b/optuna_dashboard/ts/components/StudyDetail.tsx
index 212400fe..7de8d6d8 100644
--- a/optuna_dashboard/ts/components/StudyDetail.tsx
+++ b/optuna_dashboard/ts/components/StudyDetail.tsx
@@ -82,7 +82,7 @@ export const StudyDetail: FC<{
   }, [reloadInterval, studyDetail, page])
 
   let content = null
-  if (page === undefined){
+  if (page === undefined) {
     page = studyDetail?.is_preferential ? "preference" : "history"
   }
   if (page === "history") {