diff --git a/optuna_dashboard/ts/components/AppDrawer.tsx b/optuna_dashboard/ts/components/AppDrawer.tsx
index 8b81f93b..99ee0b43 100644
--- a/optuna_dashboard/ts/components/AppDrawer.tsx
+++ b/optuna_dashboard/ts/components/AppDrawer.tsx
@@ -21,7 +21,13 @@ import ListItemIcon from "@mui/material/ListItemIcon"
 import ListItemText from "@mui/material/ListItemText"
 import Modal from "@mui/material/Modal"
 import Toolbar from "@mui/material/Toolbar"
-import { CSSObject, SxProps, Theme, styled, useTheme } from "@mui/material/styles"
+import {
+  CSSObject,
+  SxProps,
+  Theme,
+  styled,
+  useTheme,
+} from "@mui/material/styles"
 import React, { FC } from "react"
 import { Link } from "react-router-dom"
 import { useRecoilState, useRecoilValue } from "recoil"
@@ -428,7 +434,7 @@ export const AppDrawer: FC<{
           </ListItem>
         </List>
       </Drawer>
-      <Box component="main" sx={ mainSx }>
+      <Box component="main" sx={mainSx}>
         <DrawerHeader />
         {children || null}
       </Box>
diff --git a/optuna_dashboard/ts/components/CompareStudies.tsx b/optuna_dashboard/ts/components/CompareStudies.tsx
index 2f7fbab6..0756d28a 100644
--- a/optuna_dashboard/ts/components/CompareStudies.tsx
+++ b/optuna_dashboard/ts/components/CompareStudies.tsx
@@ -52,8 +52,8 @@ const useQueriedStudies = (
   }, [studies, query])
 }
 
-const getStudyListLink = (ids: number[], URL_PREFIX: string): string => {
-  const base = URL_PREFIX + "/compare-studies"
+const getStudyListLink = (ids: number[], url_prefix: string): string => {
+  const base = url_prefix + "/compare-studies"
   if (ids.length > 0) {
     return base + "?ids=" + ids.map((n) => n.toString()).join(",")
   }