diff --git a/src/api/gramjs/methods/client.ts b/src/api/gramjs/methods/client.ts
index 311779e1e..f1ab980bd 100644
--- a/src/api/gramjs/methods/client.ts
+++ b/src/api/gramjs/methods/client.ts
@@ -70,7 +70,7 @@ export async function init(_onUpdate: OnApiUpdate, initialArgs: ApiInitialArgs)
   const {
     userAgent, platform, sessionData, isTest, isWebmSupported, maxBufferSize, webAuthToken, dcId,
     mockScenario, shouldForceHttpTransport, shouldAllowHttpTransport,
-    shouldDebugExportedSenders,
+    shouldDebugExportedSenders, langCode,
   } = initialArgs;
   const session = new sessions.CallbackSession(sessionData, onSessionUpdate);
 
@@ -94,6 +94,7 @@ export async function init(_onUpdate: OnApiUpdate, initialArgs: ApiInitialArgs)
       shouldAllowHttpTransport,
       testServers: isTest,
       dcId,
+      langCode,
     } as any,
   );
 
diff --git a/src/api/types/misc.ts b/src/api/types/misc.ts
index e9fcb78fb..31cbd5863 100644
--- a/src/api/types/misc.ts
+++ b/src/api/types/misc.ts
@@ -15,6 +15,7 @@ export interface ApiInitialArgs {
   shouldAllowHttpTransport?: boolean;
   shouldForceHttpTransport?: boolean;
   shouldDebugExportedSenders?: boolean;
+  langCode: string;
 }
 
 export interface ApiOnProgress {
diff --git a/src/components/modals/webApp/WebAppModal.tsx b/src/components/modals/webApp/WebAppModal.tsx
index 2902dce81..37053973e 100644
--- a/src/components/modals/webApp/WebAppModal.tsx
+++ b/src/components/modals/webApp/WebAppModal.tsx
@@ -532,7 +532,7 @@ const WebAppModal: FC<OwnProps & StateProps> = ({
         >
           <div className={backButtonClassName} />
         </Button>
-        <div className="modal-title">{bot?.firstName}</div>
+        <div className="modal-title">{attachBot?.shortName ?? bot?.firstName}</div>
         <DropdownMenu
           className="web-app-more-menu with-menu-transitions"
           trigger={MoreMenuButton}
diff --git a/src/global/actions/api/initial.ts b/src/global/actions/api/initial.ts
index 253576e3e..6bc2fb83a 100644
--- a/src/global/actions/api/initial.ts
+++ b/src/global/actions/api/initial.ts
@@ -60,6 +60,7 @@ addActionHandler('initApi', async (global, actions): Promise<void> => {
     shouldAllowHttpTransport: global.settings.byKey.shouldAllowHttpTransport,
     shouldForceHttpTransport: global.settings.byKey.shouldForceHttpTransport,
     shouldDebugExportedSenders: global.settings.byKey.shouldDebugExportedSenders,
+    langCode: global.settings.byKey.language,
   });
 
   void setShouldEnableDebugLog(Boolean(global.settings.byKey.shouldCollectDebugLogs));
diff --git a/src/lib/gramjs/client/TelegramClient.js b/src/lib/gramjs/client/TelegramClient.js
index 25c92f7b1..c639d896a 100644
--- a/src/lib/gramjs/client/TelegramClient.js
+++ b/src/lib/gramjs/client/TelegramClient.js
@@ -157,7 +157,7 @@ class TelegramClient {
                         .toString() || '1.0',
                     appVersion: args.appVersion || '1.0',
                     langCode: args.langCode,
-                    langPack: '', // this should be left empty.
+                    langPack: 'weba',
                     systemLangCode: args.systemLangCode,
                     query: x,
                     proxy: undefined, // no proxies yet.