diff --git a/src/components/calls/group/GroupCallTopPane.tsx b/src/components/calls/group/GroupCallTopPane.tsx
index 59785e0ed..9647b87bf 100644
--- a/src/components/calls/group/GroupCallTopPane.tsx
+++ b/src/components/calls/group/GroupCallTopPane.tsx
@@ -1,6 +1,6 @@
 import type { FC } from '../../../lib/teact/teact';
 import React, {
-  memo, useCallback, useEffect, useMemo,
+  memo, useCallback, useMemo,
 } from '../../../lib/teact/teact';
 import { getActions, getGlobal, withGlobal } from '../../../global';
 
@@ -41,7 +41,6 @@ const GroupCallTopPane: FC<OwnProps & StateProps> = ({
 }) => {
   const {
     requestMasterAndJoinGroupCall,
-    subscribeToGroupCallUpdates,
   } = getActions();
 
   const lang = useOldLang();
@@ -69,23 +68,6 @@ const GroupCallTopPane: FC<OwnProps & StateProps> = ({
       .filter(Boolean);
   }, [participants]);
 
-  useEffect(() => {
-    if (!groupCall?.id) return undefined;
-    if (!isActive && groupCall.isLoaded) return undefined;
-
-    subscribeToGroupCallUpdates({
-      id: groupCall.id,
-      subscribed: true,
-    });
-
-    return () => {
-      subscribeToGroupCallUpdates({
-        id: groupCall.id,
-        subscribed: false,
-      });
-    };
-  }, [groupCall?.id, groupCall?.isLoaded, isActive, subscribeToGroupCallUpdates]);
-
   const renderingParticipantCount = useCurrentOrPrev(groupCall?.participantsCount, true);
   const renderingFetchedParticipants = useCurrentOrPrev(fetchedParticipants, true);
 
diff --git a/src/global/actions/apiUpdaters/calls.ts b/src/global/actions/apiUpdaters/calls.ts
index aab7cf637..09c2ba64b 100644
--- a/src/global/actions/apiUpdaters/calls.ts
+++ b/src/global/actions/apiUpdaters/calls.ts
@@ -107,9 +107,11 @@ addActionHandler('apiUpdate', (global, actions, update): ActionReturnType => {
       if (!isOutgoing && call.state === 'requested') {
         onTickEnd(() => {
           global = getGlobal();
+          const user = selectPhoneCallUser(global);
+          if (!user) return;
           notifyAboutCall({
             call,
-            user: selectPhoneCallUser(global)!,
+            user,
           });
         });
 
diff --git a/src/global/actions/ui/calls.ts b/src/global/actions/ui/calls.ts
index 3eeced719..c57245c3e 100644
--- a/src/global/actions/ui/calls.ts
+++ b/src/global/actions/ui/calls.ts
@@ -131,26 +131,6 @@ addActionHandler('toggleGroupCallPanel', (global, actions, payload): ActionRetur
   }, tabId);
 });
 
-addActionHandler('subscribeToGroupCallUpdates', async (global, actions, payload): Promise<void> => {
-  if (selectIsCurrentUserFrozen(global)) return;
-
-  const { subscribed, id } = payload;
-  const groupCall = selectGroupCall(global, id);
-
-  if (!groupCall) return;
-
-  if (subscribed) {
-    await fetchGroupCall(global, groupCall);
-    global = getGlobal();
-    await requestGroupCallParticipants(groupCall);
-  }
-
-  await callApi('toggleGroupCallStartSubscription', {
-    subscribed,
-    call: groupCall,
-  });
-});
-
 addActionHandler('createGroupCall', async (global, actions, payload): Promise<void> => {
   const { chatId, tabId = getCurrentTabId() } = payload;
 
@@ -341,7 +321,7 @@ addActionHandler('joinGroupCall', async (global, actions, payload): Promise<void
 addActionHandler('playGroupCallSound', (global, actions, payload): ActionReturnType => {
   const { sound } = payload;
 
-  if (!sounds[sound]) {
+  if (!sounds?.[sound]) {
     return;
   }
 
diff --git a/src/global/types/actions.ts b/src/global/types/actions.ts
index c58cce2aa..c392cd603 100644
--- a/src/global/types/actions.ts
+++ b/src/global/types/actions.ts
@@ -2265,10 +2265,6 @@ export interface ActionPayloads {
     username: string;
     inviteHash: string;
   } & WithTabId;
-  subscribeToGroupCallUpdates: {
-    subscribed: boolean;
-    id: string;
-  };
   createGroupCallInviteLink: WithTabId | undefined;
 
   loadMoreGroupCallParticipants: undefined;