diff --git a/components/status/StatusDetails.vue b/components/status/StatusDetails.vue
index dd53bcda..1d927e60 100644
--- a/components/status/StatusDetails.vue
+++ b/components/status/StatusDetails.vue
@@ -20,7 +20,7 @@ const createdAt = useFormattedDateTime(status.createdAt)
 const { t } = useI18n()
 
 useHeadFixed({
-  title: () => `${status.account.displayName || status.account.acct} ${t('common.in')} ${t('app_name')}: "${removeHTMLTags(status.content) || ''}"`,
+  title: () => `${getDisplayName(status.account)} ${t('common.in')} ${t('app_name')}: "${removeHTMLTags(status.content) || ''}"`,
 })
 
 const isDM = $computed(() => status.visibility === 'direct')
diff --git a/composables/masto/account.ts b/composables/masto/account.ts
index 8b47ac69..a5736a08 100644
--- a/composables/masto/account.ts
+++ b/composables/masto/account.ts
@@ -1,7 +1,7 @@
 import type { mastodon } from 'masto'
 
-export function getDisplayName(account?: mastodon.v1.Account, options?: { rich?: boolean }) {
-  const displayName = account?.displayName || account?.username || ''
+export function getDisplayName(account: mastodon.v1.Account, options?: { rich?: boolean }) {
+  const displayName = account.displayName || account.username || account.acct || ''
   if (options?.rich)
     return displayName
   return displayName.replace(/:([\w-]+?):/g, '')