diff --git a/td/telegram/ContactsManager.cpp b/td/telegram/ContactsManager.cpp
index 6e0703a80..0c4d634e3 100644
--- a/td/telegram/ContactsManager.cpp
+++ b/td/telegram/ContactsManager.cpp
@@ -13809,7 +13809,8 @@ void ContactsManager::on_chat_update(telegram_api::chat &chat, const char *sourc
 
   bool has_active_group_call = (chat.flags_ & CHAT_FLAG_HAS_ACTIVE_GROUP_CALL) != 0;
   bool is_group_call_empty = (chat.flags_ & CHAT_FLAG_IS_GROUP_CALL_NON_EMPTY) == 0;
-  td_->messages_manager_->on_update_dialog_group_call(DialogId(chat_id), has_active_group_call, is_group_call_empty);
+  td_->messages_manager_->on_update_dialog_group_call(DialogId(chat_id), has_active_group_call, is_group_call_empty,
+                                                      "receive chat");
 }
 
 void ContactsManager::on_chat_update(telegram_api::chatForbidden &chat, const char *source) {
@@ -14002,7 +14003,8 @@ void ContactsManager::on_chat_update(telegram_api::channel &channel, const char
 
   bool has_active_group_call = (channel.flags_ & CHANNEL_FLAG_HAS_ACTIVE_GROUP_CALL) != 0;
   bool is_group_call_empty = (channel.flags_ & CHANNEL_FLAG_IS_GROUP_CALL_NON_EMPTY) == 0;
-  td_->messages_manager_->on_update_dialog_group_call(DialogId(channel_id), has_active_group_call, is_group_call_empty);
+  td_->messages_manager_->on_update_dialog_group_call(DialogId(channel_id), has_active_group_call, is_group_call_empty,
+                                                      "receive channel");
 }
 
 void ContactsManager::on_chat_update(telegram_api::channelForbidden &channel, const char *source) {
@@ -14041,7 +14043,7 @@ void ContactsManager::on_chat_update(telegram_api::channelForbidden &channel, co
   // on_update_channel_username(c, channel_id, "");  // don't know if channel username is empty, so don't update it
   tl_object_ptr<telegram_api::chatBannedRights> banned_rights;  // == nullptr
   on_update_channel_default_permissions(c, channel_id, get_restricted_rights(banned_rights));
-  td_->messages_manager_->on_update_dialog_group_call(DialogId(channel_id), false, false);
+  td_->messages_manager_->on_update_dialog_group_call(DialogId(channel_id), false, false, "receive channelForbidden");
 
   bool sign_messages = false;
   bool is_slow_mode_enabled = false;
diff --git a/td/telegram/GroupCallManager.cpp b/td/telegram/GroupCallManager.cpp
index da9210ba3..7c9573b33 100644
--- a/td/telegram/GroupCallManager.cpp
+++ b/td/telegram/GroupCallManager.cpp
@@ -665,7 +665,7 @@ void GroupCallManager::on_voice_chat_created(DialogId dialog_id, InputGroupCallI
     return promise.set_error(Status::Error(500, "Receive invalid group call identifier"));
   }
 
-  td_->messages_manager_->on_update_dialog_group_call(dialog_id, true, true);
+  td_->messages_manager_->on_update_dialog_group_call(dialog_id, true, true, "on_voice_chat_created");
   td_->messages_manager_->on_update_dialog_group_call_id(dialog_id, input_group_call_id);
 
   promise.set_value(get_group_call_id(input_group_call_id, dialog_id));
@@ -1952,7 +1952,7 @@ void GroupCallManager::update_group_call_dialog(const GroupCall *group_call, con
   }
 
   td_->messages_manager_->on_update_dialog_group_call(group_call->dialog_id, group_call->is_active,
-                                                      group_call->participant_count == 0);
+                                                      group_call->participant_count == 0, source);
 }
 
 vector<int32> GroupCallManager::get_recent_speaker_user_ids(const GroupCall *group_call, bool for_update) {
diff --git a/td/telegram/MessagesManager.cpp b/td/telegram/MessagesManager.cpp
index ba6389885..a3e06192c 100644
--- a/td/telegram/MessagesManager.cpp
+++ b/td/telegram/MessagesManager.cpp
@@ -28973,13 +28973,13 @@ void MessagesManager::do_set_dialog_folder_id(Dialog *d, FolderId folder_id) {
 }
 
 void MessagesManager::on_update_dialog_group_call(DialogId dialog_id, bool has_active_group_call,
-                                                  bool is_group_call_empty) {
+                                                  bool is_group_call_empty, const char *source) {
   if (td_->auth_manager_->is_bot()) {
     return;
   }
 
   LOG(INFO) << "Update voice chat in " << dialog_id << " with has_active_voice_chat = " << has_active_group_call
-            << " and is_voice_chat_empty = " << is_group_call_empty;
+            << " and is_voice_chat_empty = " << is_group_call_empty << " from " << source;
 
   CHECK(dialog_id.is_valid());
   Dialog *d = get_dialog(dialog_id);  // must not create the Dialog, because is called from on_get_chat
diff --git a/td/telegram/MessagesManager.h b/td/telegram/MessagesManager.h
index e6bf71d34..3f88e1977 100644
--- a/td/telegram/MessagesManager.h
+++ b/td/telegram/MessagesManager.h
@@ -333,7 +333,8 @@ class MessagesManager : public Actor {
 
   void on_update_dialog_folder_id(DialogId dialog_id, FolderId folder_id);
 
-  void on_update_dialog_group_call(DialogId dialog_id, bool has_active_group_call, bool is_group_call_empty);
+  void on_update_dialog_group_call(DialogId dialog_id, bool has_active_group_call, bool is_group_call_empty,
+                                   const char *source);
 
   void on_update_dialog_group_call_id(DialogId dialog_id, InputGroupCallId input_group_call_id);