diff --git a/td/telegram/ContactsManager.cpp b/td/telegram/ContactsManager.cpp
index f9a0d9dee..9dfd0be20 100644
--- a/td/telegram/ContactsManager.cpp
+++ b/td/telegram/ContactsManager.cpp
@@ -13192,6 +13192,11 @@ void ContactsManager::on_channel_status_changed(const Channel *c, ChannelId chan
   if (td_->auth_manager_->is_bot() && old_status.is_administrator() && !new_status.is_administrator()) {
     channel_participants_.erase(channel_id);
   }
+  if (td_->auth_manager_->is_bot() && old_status.is_member() && !new_status.is_member() &&
+      !G()->parameters().use_message_db) {
+    send_closure_later(G()->messages_manager(), &MessagesManager::on_dialog_deleted, DialogId(channel_id),
+                       Promise<Unit>());
+  }
 
   // must not load ChannelFull, because must not change the Channel
   CHECK(have_channel_full == (get_channel_full(channel_id) != nullptr));
diff --git a/td/telegram/MessagesManager.cpp b/td/telegram/MessagesManager.cpp
index 2d124c481..4d5cf1b81 100644
--- a/td/telegram/MessagesManager.cpp
+++ b/td/telegram/MessagesManager.cpp
@@ -10968,6 +10968,9 @@ void MessagesManager::on_dialog_deleted(DialogId dialog_id, Promise<Unit> &&prom
   if (remove_recently_found_dialog_internal(dialog_id)) {
     save_recently_found_dialogs();
   }
+  if (dialog_id.get_type() == DialogType::Channel) {
+    G()->td_db()->get_binlog_pmc()->erase(get_channel_pts_key(dialog_id));
+  }
 
   close_dialog(d);
   promise.set_value(Unit());
@@ -34958,7 +34961,7 @@ string MessagesManager::get_channel_pts_key(DialogId dialog_id) {
 }
 
 int32 MessagesManager::load_channel_pts(DialogId dialog_id) const {
-  if (G()->ignore_background_updates()) {
+  if (G()->ignore_background_updates() || !have_input_peer(dialog_id, AccessRights::Read)) {
     G()->td_db()->get_binlog_pmc()->erase(get_channel_pts_key(dialog_id));  // just in case
     return 0;
   }
@@ -35009,7 +35012,7 @@ void MessagesManager::set_channel_pts(Dialog *d, int32 new_pts, const char *sour
         repair_channel_server_unread_count(d);
       }
     }
-    if (!G()->ignore_background_updates()) {
+    if (!G()->ignore_background_updates() && have_input_peer(d->dialog_id, AccessRights::Read)) {
       G()->td_db()->get_binlog_pmc()->set(get_channel_pts_key(d->dialog_id), to_string(new_pts));
     }
   } else if (new_pts < d->pts) {