diff --git a/tdutils/td/utils/port/detail/ThreadIdGuard.cpp b/tdutils/td/utils/port/detail/ThreadIdGuard.cpp
index 8f9252b44..94efbe020 100644
--- a/tdutils/td/utils/port/detail/ThreadIdGuard.cpp
+++ b/tdutils/td/utils/port/detail/ThreadIdGuard.cpp
@@ -7,6 +7,7 @@
 #include "td/utils/port/detail/ThreadIdGuard.h"
 
 #include "td/utils/common.h"
+#include "td/utils/ExitGuard.h"
 #include "td/utils/port/thread_local.h"
 
 #include <mutex>
@@ -27,6 +28,9 @@ class ThreadIdManager {
     return result;
   }
   void unregister_thread(int32 thread_id) {
+    if (ExitGuard::is_exited()) {
+      return;
+    }
     std::lock_guard<std::mutex> guard(mutex_);
     CHECK(0 < thread_id && thread_id <= max_thread_id_);
     bool is_inserted = unused_thread_ids_.insert(thread_id).second;
@@ -39,6 +43,7 @@ class ThreadIdManager {
   int32 max_thread_id_ = 0;
 };
 static ThreadIdManager thread_id_manager;
+static ExitGuard exit_guard;
 
 ThreadIdGuard::ThreadIdGuard() {
   thread_id_ = thread_id_manager.register_thread();