diff --git a/td/telegram/AuthManager.cpp b/td/telegram/AuthManager.cpp
index 56f49ffeb..8415c0851 100644
--- a/td/telegram/AuthManager.cpp
+++ b/td/telegram/AuthManager.cpp
@@ -327,13 +327,6 @@ void AuthManager::tear_down() {
   parent_.reset();
 }
 
-bool AuthManager::is_bot() const {
-  if (net_query_id_ != 0 && net_query_type_ == NetQueryType::BotAuthentication) {
-    return true;
-  }
-  return is_bot_ && was_authorized();
-}
-
 bool AuthManager::was_authorized() const {
   return state_ == State::Ok || state_ == State::LoggingOut || state_ == State::DestroyingKeys ||
          state_ == State::Closing;
diff --git a/td/telegram/AuthManager.h b/td/telegram/AuthManager.h
index 7c8a39d0a..428515ecf 100644
--- a/td/telegram/AuthManager.h
+++ b/td/telegram/AuthManager.h
@@ -28,7 +28,9 @@ class AuthManager final : public NetActor {
  public:
   AuthManager(int32 api_id, const string &api_hash, ActorShared<> parent);
 
-  bool is_bot() const;
+  bool is_bot() const {
+    return is_bot_ || net_query_type_ == NetQueryType::BotAuthentication;
+  }
 
   bool is_authorized() const;
   bool was_authorized() const;