diff --git a/td/telegram/Td.cpp b/td/telegram/Td.cpp
index 4a978852..878644e9 100644
--- a/td/telegram/Td.cpp
+++ b/td/telegram/Td.cpp
@@ -6911,7 +6911,7 @@ void Td::on_request(uint64 id, td_api::testGetDifference &request) {
   send_closure(actor_id(this), &Td::send_result, id, make_tl_object<td_api::ok>());
 }
 
-static int *get_log_verbosity_level(Slice name) {
+int *Td::get_log_verbosity_level(Slice name) {
   if (name == "td_init") {
     return &VERBOSITY_NAME(td_init);
   }
diff --git a/td/telegram/Td.h b/td/telegram/Td.h
index 0ad59602..77775b51 100644
--- a/td/telegram/Td.h
+++ b/td/telegram/Td.h
@@ -303,6 +303,8 @@ class Td final : public NetQueryCallback {
 
   std::shared_ptr<UploadFileCallback> upload_file_callback_;
 
+  static int *get_log_verbosity_level(Slice name);
+
   template <class T>
   Promise<T> create_request_promise(uint64 id);