diff --git a/packages/frontend/src/components/MkMention.vue b/packages/frontend/src/components/MkMention.vue
index 861608142308..87c82f0a8901 100644
--- a/packages/frontend/src/components/MkMention.vue
+++ b/packages/frontend/src/components/MkMention.vue
@@ -8,7 +8,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<img :class="$style.icon" :src="avatarUrl" alt="">
 	<span>
 		<span>@{{ username }}</span>
-		<span v-if="(host != localHost) || defaultStore.state.showFullAcct" :class="$style.host">@{{ toUnicode(host) }}</span>
+		<span v-if="(host != localHost)" :class="$style.host">@{{ toUnicode(host) }}</span>
 	</span>
 </MkA>
 </template>
@@ -17,10 +17,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { toUnicode } from 'punycode.js';
 import { computed } from 'vue';
 import { host as localHost } from '@@/js/config.js';
+import type { MkABehavior } from '@/components/global/MkA.vue';
 import { $i } from '@/account.js';
 import { defaultStore } from '@/store.js';
 import { getStaticImageUrl } from '@/scripts/media-proxy.js';
-import type { MkABehavior } from '@/components/global/MkA.vue';
 
 const props = defineProps<{
 	username: string;
diff --git a/packages/frontend/src/components/global/MkAcct.vue b/packages/frontend/src/components/global/MkAcct.vue
index 2f4141b901e6..ff794d9b6e6b 100644
--- a/packages/frontend/src/components/global/MkAcct.vue
+++ b/packages/frontend/src/components/global/MkAcct.vue
@@ -6,7 +6,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <template>
 <span>
 	<span>@{{ user.username }}</span>
-	<span v-if="user.host || detail || defaultStore.state.showFullAcct" style="opacity: 0.5;">@{{ user.host || host }}</span>
+	<span v-if="user.host || detail" style="opacity: 0.5;">@{{ user.host || host }}</span>
 </span>
 </template>
 
@@ -14,7 +14,6 @@ SPDX-License-Identifier: AGPL-3.0-only
 import * as Misskey from 'misskey-js';
 import { toUnicode } from 'punycode.js';
 import { host as hostRaw } from '@@/js/config.js';
-import { defaultStore } from '@/store.js';
 
 defineProps<{
 	user: Misskey.entities.UserLite;
diff --git a/packages/frontend/src/store.ts b/packages/frontend/src/store.ts
index e2243e067aa8..128fce315fff 100644
--- a/packages/frontend/src/store.ts
+++ b/packages/frontend/src/store.ts
@@ -10,8 +10,8 @@ import lightTheme from '@@/themes/l-light.json5';
 import darkTheme from '@@/themes/d-green-lime.json5';
 import type { SoundType } from '@/scripts/sound.js';
 import type { Ast } from '@syuilo/aiscript';
-import { DEFAULT_DEVICE_KIND } from '@/scripts/device-kind.js';
 import type { DeviceKind } from '@/scripts/device-kind.js';
+import { DEFAULT_DEVICE_KIND } from '@/scripts/device-kind.js';
 import { miLocalStorage } from '@/local-storage.js';
 import { Storage } from '@/pizzax.js';
 
@@ -89,10 +89,6 @@ export const defaultStore = markRaw(new Storage('base', {
 		where: 'account',
 		default: true,
 	},
-	showFullAcct: {
-		where: 'account',
-		default: false,
-	},
 	collapseRenotes: {
 		where: 'account',
 		default: true,