diff --git a/src/components/auth/AuthQrCode.tsx b/src/components/auth/AuthQrCode.tsx
index e601fea16..bd2491470 100644
--- a/src/components/auth/AuthQrCode.tsx
+++ b/src/components/auth/AuthQrCode.tsx
@@ -1,11 +1,11 @@
 import React, {
-  memo, useCallback, useEffect, useLayoutEffect, useRef,
+  memo, useCallback, useLayoutEffect, useRef,
 } from '../../lib/teact/teact';
 import { getActions, withGlobal } from '../../global';
 
 import type { GlobalState } from '../../global/types';
 
-import { DEFAULT_LANG_CODE, STRICTERDOM_ENABLED } from '../../config';
+import { STRICTERDOM_ENABLED } from '../../config';
 import { disableStrict, enableStrict } from '../../lib/fasterdom/stricterdom';
 import buildClassName from '../../util/buildClassName';
 import { oldSetLanguage } from '../../util/oldLangProvider';
@@ -125,12 +125,6 @@ const AuthCode = ({
     return undefined;
   }, [isConnected, authQrCode, isQrMounted, markQrMounted, unmarkQrMounted, qrCode]);
 
-  useEffect(() => {
-    if (isConnected) {
-      void oldSetLanguage(DEFAULT_LANG_CODE);
-    }
-  }, [isConnected]);
-
   const handleLangChange = useCallback(() => {
     markIsLoading();
 
diff --git a/src/config.ts b/src/config.ts
index 0be46c2ee..b7efaf536 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -322,7 +322,6 @@ export const DELETED_COMMENTS_CHANNEL_ID = '-1000000000777';
 export const MAX_MEDIA_FILES_FOR_ALBUM = 10;
 export const MAX_ACTIVE_PINNED_CHATS = 5;
 export const SCHEDULED_WHEN_ONLINE = 0x7FFFFFFE;
-export const DEFAULT_LANG_CODE = 'en';
 export const LANG_PACKS = ['android', 'ios', 'tdesktop', 'macos'] as const;
 export const FEEDBACK_URL = 'https://bugs.telegram.org/?tag_ids=41&sort=time';
 export const FAQ_URL = 'https://telegram.org/faq';
diff --git a/src/hooks/useLangString.ts b/src/hooks/useLangString.ts
index fe47c3078..481e7eebd 100644
--- a/src/hooks/useLangString.ts
+++ b/src/hooks/useLangString.ts
@@ -17,7 +17,7 @@ export default function useLangString(key: RegularLangKey, langCode?: string) {
       langPack: LANG_PACK,
       keys: [key],
     });
-    const langString = result?.strings[0];
+    const langString = result?.strings[key];
     if (!langString || typeof langString !== 'string') return undefined;
     return langString;
   });
diff --git a/src/util/oldLangProvider.ts b/src/util/oldLangProvider.ts
index 1b63e1c98..ec031acae 100644
--- a/src/util/oldLangProvider.ts
+++ b/src/util/oldLangProvider.ts
@@ -4,7 +4,7 @@ import type { ApiOldLangPack, ApiOldLangString } from '../api/types';
 import type { LangCode, TimeFormat } from '../types';
 
 import {
-  DEFAULT_LANG_CODE, LANG_CACHE_NAME, LANG_PACKS,
+  LANG_CACHE_NAME, LANG_PACKS,
 } from '../config';
 import { callApi } from '../api/gramjs';
 import * as cacheApi from './cacheApi';
@@ -229,7 +229,7 @@ async function fetchRemote(langCode: string): Promise<ApiOldLangPack | undefined
 }
 
 function getPluralOption(amount: number) {
-  const langCode = currentLangCode || DEFAULT_LANG_CODE;
+  const langCode = currentLangCode || 'en';
   const optionIndex = PLURAL_RULES[langCode as keyof typeof PLURAL_RULES]
     ? PLURAL_RULES[langCode as keyof typeof PLURAL_RULES](amount)
     : 0;