diff --git a/packages/frontend/src/boot/common.ts b/packages/frontend/src/boot/common.ts
index 60f2781fdf..728f39962b 100644
--- a/packages/frontend/src/boot/common.ts
+++ b/packages/frontend/src/boot/common.ts
@@ -8,7 +8,7 @@ import { compareVersions } from 'compare-versions';
 import widgets from '@/widgets/index.js';
 import directives from '@/directives/index.js';
 import components from '@/components/index.js';
-import { version, ui, lang, updateLocale } from '@/config.js';
+import { version, ui, lang, updateLocale, locale } from '@/config.js';
 import { applyTheme } from '@/scripts/theme.js';
 import { isDeviceDarkmode } from '@/scripts/is-device-darkmode.js';
 import { i18n, updateI18n } from '@/i18n.js';
@@ -88,7 +88,7 @@ export async function common(createVue: () => App<Element>) {
 
 	//#region Detect language & fetch translations
 	const localeVersion = miLocalStorage.getItem('localeVersion');
-	const localeOutdated = (localeVersion == null || localeVersion !== version);
+	const localeOutdated = (localeVersion == null || localeVersion !== version || locale == null);
 	if (localeOutdated) {
 		const res = await window.fetch(`/assets/locales/${lang}.${version}.json`);
 		if (res.status === 200) {
diff --git a/packages/frontend/src/scripts/clear-cache.ts b/packages/frontend/src/scripts/clear-cache.ts
index 5f27254b8a..f2db87c4fb 100644
--- a/packages/frontend/src/scripts/clear-cache.ts
+++ b/packages/frontend/src/scripts/clear-cache.ts
@@ -6,6 +6,7 @@ import { fetchCustomEmojis } from '@/custom-emojis.js';
 export async function clearCache() {
 	os.waiting();
 	miLocalStorage.removeItem('locale');
+	miLocalStorage.removeItem('localeVersion');
 	miLocalStorage.removeItem('theme');
 	miLocalStorage.removeItem('emojis');
 	miLocalStorage.removeItem('lastEmojisFetchedAt');