diff --git a/td/telegram/CountryInfoManager.cpp b/td/telegram/CountryInfoManager.cpp
index a7842c556..bbb500d58 100644
--- a/td/telegram/CountryInfoManager.cpp
+++ b/td/telegram/CountryInfoManager.cpp
@@ -451,7 +451,7 @@ const CountryInfoManager::CountryList *CountryInfoManager::get_country_list(cons
       it = countries_.find(language_code);
       CHECK(it != countries_.end())
       auto *country = it->second.get();
-      load_country_list(language_code, country->hash, {});
+      load_country_list(language_code, country->hash, Auto());
       return country;
     }
     return nullptr;
@@ -460,7 +460,7 @@ const CountryInfoManager::CountryList *CountryInfoManager::get_country_list(cons
   auto *country = it->second.get();
   CHECK(country != nullptr);
   if (country->next_reload_time < Time::now()) {
-    load_country_list(language_code, country->hash, {});
+    load_country_list(language_code, country->hash, Auto());
   }
 
   return country;
diff --git a/td/telegram/GroupCallManager.cpp b/td/telegram/GroupCallManager.cpp
index fd7344d9a..02af634ef 100644
--- a/td/telegram/GroupCallManager.cpp
+++ b/td/telegram/GroupCallManager.cpp
@@ -181,6 +181,8 @@ struct GroupCallManager::PendingJoinRequest {
 GroupCallManager::GroupCallManager(Td *td, ActorShared<> parent) : td_(td), parent_(std::move(parent)) {
 }
 
+GroupCallManager::~GroupCallManager() = default;
+
 void GroupCallManager::tear_down() {
   parent_.reset();
 }
diff --git a/td/telegram/GroupCallManager.h b/td/telegram/GroupCallManager.h
index 47495d791..ee90d9427 100644
--- a/td/telegram/GroupCallManager.h
+++ b/td/telegram/GroupCallManager.h
@@ -23,6 +23,11 @@ class Td;
 class GroupCallManager : public Actor {
  public:
   GroupCallManager(Td *td, ActorShared<> parent);
+  GroupCallManager(const GroupCallManager &) = delete;
+  GroupCallManager &operator=(const GroupCallManager &) = delete;
+  GroupCallManager(GroupCallManager &&) = delete;
+  GroupCallManager &operator=(GroupCallManager &&) = delete;
+  ~GroupCallManager() override;
 
   void create_group_call(ChannelId channel_id, Promise<InputGroupCallId> &&promise);