diff --git a/td/telegram/MessageContent.cpp b/td/telegram/MessageContent.cpp
index b1d4659fd..e1ee13559 100644
--- a/td/telegram/MessageContent.cpp
+++ b/td/telegram/MessageContent.cpp
@@ -5798,10 +5798,6 @@ static bool need_register_message_content_for_bots(MessageContentType content_ty
   return content_type == MessageContentType::Poll;
 }
 
-static int32 get_months_by_star_count(int64 star_count) {
-  return star_count <= 1000 ? 3 : (star_count < 2500 ? 6 : 12);
-}
-
 void register_message_content(Td *td, const MessageContent *content, MessageFullId message_full_id,
                               const char *source) {
   auto content_type = content->get_type();
@@ -5849,8 +5845,8 @@ void register_message_content(Td *td, const MessageContent *content, MessageFull
                                                 message_full_id, {}, source);
     case MessageContentType::GiftStars: {
       auto star_count = static_cast<const MessageGiftStars *>(content)->star_count;
-      return td->stickers_manager_->register_premium_gift(get_months_by_star_count(star_count), message_full_id,
-                                                          source);
+      return td->stickers_manager_->register_premium_gift(StarManager::get_months_by_star_count(star_count),
+                                                          message_full_id, source);
     }
     default:
       return;
@@ -5984,8 +5980,8 @@ void unregister_message_content(Td *td, const MessageContent *content, MessageFu
                                                   message_full_id, {}, source);
     case MessageContentType::GiftStars: {
       auto star_count = static_cast<const MessageGiftStars *>(content)->star_count;
-      return td->stickers_manager_->unregister_premium_gift(get_months_by_star_count(star_count), message_full_id,
-                                                            source);
+      return td->stickers_manager_->unregister_premium_gift(StarManager::get_months_by_star_count(star_count),
+                                                            message_full_id, source);
     }
     default:
       return;
@@ -7960,7 +7956,7 @@ tl_object_ptr<td_api::MessageContent> get_message_content_object(const MessageCo
       return td_api::make_object<td_api::messageGiftedStars>(
           gifter_user_id, receiver_user_id, m->currency, m->amount, m->crypto_currency, m->crypto_amount, m->star_count,
           m->transaction_id,
-          td->stickers_manager_->get_premium_gift_sticker_object(get_months_by_star_count(m->star_count)));
+          td->stickers_manager_->get_premium_gift_sticker_object(StarManager::get_months_by_star_count(m->star_count)));
     }
     default:
       UNREACHABLE();
diff --git a/td/telegram/StarManager.cpp b/td/telegram/StarManager.cpp
index d346bfae3..3ba120ccd 100644
--- a/td/telegram/StarManager.cpp
+++ b/td/telegram/StarManager.cpp
@@ -666,4 +666,8 @@ int64 StarManager::get_star_count(int64 amount, bool allow_negative) {
   return amount;
 }
 
+int32 StarManager::get_months_by_star_count(int64 star_count) {
+  return star_count <= 1000 ? 3 : (star_count < 2500 ? 6 : 12);
+}
+
 }  // namespace td
diff --git a/td/telegram/StarManager.h b/td/telegram/StarManager.h
index 29da88361..9808e13c9 100644
--- a/td/telegram/StarManager.h
+++ b/td/telegram/StarManager.h
@@ -54,6 +54,8 @@ class StarManager final : public Actor {
 
   static int64 get_star_count(int64 amount, bool allow_negative = false);
 
+  static int32 get_months_by_star_count(int64 star_count);
+
  private:
   void tear_down() final;