diff --git a/frontend/src/pages/help/HelpListPage.tsx b/frontend/src/pages/help/HelpListPage.tsx
index 2a3a91d..60acb6d 100644
--- a/frontend/src/pages/help/HelpListPage.tsx
+++ b/frontend/src/pages/help/HelpListPage.tsx
@@ -13,7 +13,6 @@ import type { FormEvent, FC } from 'react'
 
 import type { HelpSearchEntry } from '@/lib/help'
 
-
 type SearchConditions = { title: string; text: string }
 
 
@@ -28,19 +27,23 @@ const HelpSearchPage: FC = () => {
   useEffect (() => {
     let active = true
 
-    void getHelpSearchEntries ('ja')
-      .then (data => {
+    void (async () => {
+      try
+      {
 	if (active)
-	  setEntries (data)
-      })
-      .catch (err => {
+	  setEntries (await getHelpSearchEntries ('ja'))
+      }
+      catch (err)
+      {
 	if (active)
 	  setError (err instanceof Error ? err.message : '取得に失敗しました．')
-      })
-      .finally (() => {
+      }
+      finally
+      {
 	if (active)
 	  setLoading (false)
-      })
+      }
+    }) ()
 
     return () => { active = false }
   }, [])
@@ -49,10 +52,13 @@ const HelpSearchPage: FC = () => {
     const titleQuery = conditions.title.trim ().normalize ('NFKC').toLowerCase ()
     const textQuery = conditions.text.trim ().normalize ('NFKC').toLowerCase ()
 
-    return entries.filter (entry => (
-	(!(titleQuery) || entry.title.normalize ('NFKC').toLowerCase ().includes (titleQuery))
-	&& (!(textQuery) || entry.body.normalize ('NFKC').toLowerCase ().includes (textQuery))))
-      .sort ((a, b) => a.title.localeCompare (b.title, 'ja'))
+    return (
+	entries.filter (entry => (
+	    (!(titleQuery)
+	     || entry.title.normalize ('NFKC').toLowerCase ().includes (titleQuery))
+	    && (!(textQuery)
+		|| entry.body.normalize ('NFKC').toLowerCase ().includes (textQuery))))
+	.sort ((a, b) => a.title.localeCompare (b.title, 'ja')))
   }, [entries, conditions])
 
   const handleSearch = (ev: FormEvent<HTMLFormElement>) => {
@@ -63,7 +69,7 @@ const HelpSearchPage: FC = () => {
   return (
       <MainArea>
 	<Helmet>
-	  <title>{`ヘルプ | ${SITE_TITLE}`}</title>
+	  <title>{`ヘルプ | ${ SITE_TITLE }`}</title>
 	</Helmet>
 
 	<div className="max-w-xl">