diff --git a/td/telegram/Td.cpp b/td/telegram/Td.cpp
index 68f2008ce..1abb73610 100644
--- a/td/telegram/Td.cpp
+++ b/td/telegram/Td.cpp
@@ -3113,7 +3113,7 @@ void Td::on_alarm_timeout(int64 alarm_id) {
     return;
   }
   if (alarm_id == PING_SERVER_ALARM_ID) {
-    if (!close_flag_ && updates_manager_ != nullptr) {
+    if (!close_flag_ && updates_manager_ != nullptr && auth_manager_->is_authorized()) {
       updates_manager_->ping_server();
       alarm_timeout_.set_timeout_in(PING_SERVER_ALARM_ID,
                                     PING_SERVER_TIMEOUT + Random::fast(0, PING_SERVER_TIMEOUT / 5));
@@ -3632,7 +3632,7 @@ void Td::on_result(NetQueryPtr query) {
       updates_manager_->schedule_get_difference("failed to fetch update");
     } else {
       updates_manager_->on_get_updates(std::move(ptr));
-      if (auth_manager_->is_bot()) {
+      if (auth_manager_->is_bot() && auth_manager_->is_authorized()) {
         alarm_timeout_.set_timeout_in(PING_SERVER_ALARM_ID,
                                       PING_SERVER_TIMEOUT + Random::fast(0, PING_SERVER_TIMEOUT / 5));
       }