diff --git a/td/telegram/net/NetQueryCreator.cpp b/td/telegram/net/NetQueryCreator.cpp
index 9d07b02d0..1b45bdfaa 100644
--- a/td/telegram/net/NetQueryCreator.cpp
+++ b/td/telegram/net/NetQueryCreator.cpp
@@ -22,7 +22,8 @@
 namespace td {
 
 NetQueryCreator::NetQueryCreator(std::shared_ptr<NetQueryStats> net_query_stats)
-    : net_query_stats_(std::move(net_query_stats)), current_scheduler_id_(Scheduler::instance()->sched_id()) {
+    : net_query_stats_(std::move(net_query_stats))
+    , current_scheduler_id_(Scheduler::instance() == nullptr ? -2 : Scheduler::instance()->sched_id()) {
   object_pool_.set_check_empty(true);
 }
 
@@ -44,7 +45,8 @@ NetQueryPtr NetQueryCreator::create(uint64 id, const telegram_api::Function &fun
   int32 tl_constructor = function.get_id();
   int32 total_timeout_limit = 60;
 
-  if (current_scheduler_id_ == Scheduler::instance()->sched_id() && !G()->close_flag()) {
+  if (Scheduler::instance() != nullptr && current_scheduler_id_ == Scheduler::instance()->sched_id() &&
+      !G()->close_flag()) {
     auto td = G()->td();
     if (!td.empty()) {
       auto auth_manager = td.get_actor_unsafe()->auth_manager_.get();