diff --git a/src/helpers/windowSize.ts b/src/helpers/windowSize.ts
index c0954032..15c96475 100644
--- a/src/helpers/windowSize.ts
+++ b/src/helpers/windowSize.ts
@@ -5,8 +5,8 @@
  */
 
 export class WindowSize {
-  public width = 0;
-  public height = 0;
+  public width: number;
+  public height: number;
 
   constructor() {
     // @ts-ignore
diff --git a/src/lib/appManagers/appMessagesManager.ts b/src/lib/appManagers/appMessagesManager.ts
index 0d006492..ba20ed8b 100644
--- a/src/lib/appManagers/appMessagesManager.ts
+++ b/src/lib/appManagers/appMessagesManager.ts
@@ -48,7 +48,7 @@ import appNotificationsManager, { NotifyOptions } from "./appNotificationsManage
 import PeerTitle from "../../components/peerTitle";
 import htmlToDocumentFragment from "../../helpers/dom/htmlToDocumentFragment";
 import htmlToSpan from "../../helpers/dom/htmlToSpan";
-import { MUTE_UNTIL, NULL_PEER_ID, REPLIES_HIDDEN_PEER_ID, REPLIES_PEER_ID, SERVICE_PEER_ID } from "../mtproto/mtproto_config";
+import { MUTE_UNTIL, NULL_PEER_ID, REPLIES_HIDDEN_CHANNEL_ID, REPLIES_PEER_ID, SERVICE_PEER_ID } from "../mtproto/mtproto_config";
 import formatCallDuration from "../../helpers/formatCallDuration";
 import appAvatarsManager from "./appAvatarsManager";
 import telegramMeWebManager from "../mtproto/telegramMeWebManager";
@@ -5756,7 +5756,7 @@ export class AppMessagesManager {
   public getMessageWithReplies(message: Message.message) {
     if(message.peerId !== REPLIES_PEER_ID) {
       message = this.filterMessages(message, message => !!(message as Message.message).replies)[0] as any;
-      if(!(message && message.replies && message.replies.pFlags.comments && message.replies.channel_id.toPeerId() !== REPLIES_HIDDEN_PEER_ID)) {
+      if(!(message && message.replies && message.replies.pFlags.comments && message.replies.channel_id.toChatId() !== REPLIES_HIDDEN_CHANNEL_ID)) {
         return;
       }
     }
diff --git a/src/lib/appManagers/appPhotosManager.ts b/src/lib/appManagers/appPhotosManager.ts
index 20849875..0cb44d10 100644
--- a/src/lib/appManagers/appPhotosManager.ts
+++ b/src/lib/appManagers/appPhotosManager.ts
@@ -29,6 +29,7 @@ import bytesFromHex from "../../helpers/bytes/bytesFromHex";
 import isObject from "../../helpers/object/isObject";
 import safeReplaceArrayInObject from "../../helpers/object/safeReplaceArrayInObject";
 import bytesToDataURL from "../../helpers/bytes/bytesToDataURL";
+import { REPLIES_HIDDEN_CHANNEL_ID } from "../mtproto/mtproto_config";
 
 export type MyPhoto = Photo.photo;
 
@@ -263,7 +264,7 @@ export class AppPhotosManager {
         (message.message || 
           message.reply_to_mid || 
           message.media.webpage || 
-          (message.replies && message.replies.pFlags.comments && message.replies.channel_id !== 777)
+          (message.replies && message.replies.pFlags.comments && message.replies.channel_id.toChatId() !== REPLIES_HIDDEN_CHANNEL_ID)
         )
       ) { // make sure that bubble block is human-readable
         if(boxSize.width < 320) {
diff --git a/src/lib/mtproto/mtproto_config.ts b/src/lib/mtproto/mtproto_config.ts
index 12d286f1..5c3ced16 100644
--- a/src/lib/mtproto/mtproto_config.ts
+++ b/src/lib/mtproto/mtproto_config.ts
@@ -12,7 +12,7 @@ export type UserAuth = {dcID: number | string, date: number, id: PeerId};
 
 export const NULL_PEER_ID: PeerId = 0;
 export const REPLIES_PEER_ID: PeerId = 1271266957;
-export const REPLIES_HIDDEN_PEER_ID: PeerId = 777;
+export const REPLIES_HIDDEN_CHANNEL_ID: ChatId = 777;
 export const SERVICE_PEER_ID: PeerId = 777000;
 export const MUTE_UNTIL = 0x7FFFFFFF;
 export const BOT_START_PARAM = '';