diff --git a/td/telegram/InputInvoice.h b/td/telegram/InputInvoice.h
index b15ddc365..2eafde7af 100644
--- a/td/telegram/InputInvoice.h
+++ b/td/telegram/InputInvoice.h
@@ -41,6 +41,12 @@ struct Invoice {
   Invoice(string &&currency, bool is_test, bool need_shipping_address)
       : currency_(std::move(currency)), is_test_(is_test), need_shipping_address_(need_shipping_address) {
   }
+
+  template <class StorerT>
+  void store(StorerT &storer) const;
+
+  template <class ParserT>
+  void parse(ParserT &parser);
 };
 
 struct InputInvoice {
@@ -105,6 +111,12 @@ struct InputInvoice {
                              DialogId owner_dialog_id, Td *td);
 
   bool need_poll_extended_media() const;
+
+  template <class StorerT>
+  void store(StorerT &storer) const;
+
+  template <class ParserT>
+  void parse(ParserT &parser);
 };
 
 bool operator==(const InputInvoice &lhs, const InputInvoice &rhs);
diff --git a/td/telegram/InputInvoice.hpp b/td/telegram/InputInvoice.hpp
index 4c64cd9ec..d9aa861ee 100644
--- a/td/telegram/InputInvoice.hpp
+++ b/td/telegram/InputInvoice.hpp
@@ -17,70 +17,73 @@
 namespace td {
 
 template <class StorerT>
-void store(const Invoice &invoice, StorerT &storer) {
-  bool has_tip = invoice.max_tip_amount_ != 0;
-  bool is_recurring = !invoice.recurring_payment_terms_of_service_url_.empty();
+void Invoice::store(StorerT &storer) const {
+  using td::store;
+  bool has_tip = max_tip_amount_ != 0;
+  bool is_recurring = !recurring_payment_terms_of_service_url_.empty();
   BEGIN_STORE_FLAGS();
-  STORE_FLAG(invoice.is_test_);
-  STORE_FLAG(invoice.need_name_);
-  STORE_FLAG(invoice.need_phone_number_);
-  STORE_FLAG(invoice.need_email_address_);
-  STORE_FLAG(invoice.need_shipping_address_);
-  STORE_FLAG(invoice.is_flexible_);
-  STORE_FLAG(invoice.send_phone_number_to_provider_);
-  STORE_FLAG(invoice.send_email_address_to_provider_);
+  STORE_FLAG(is_test_);
+  STORE_FLAG(need_name_);
+  STORE_FLAG(need_phone_number_);
+  STORE_FLAG(need_email_address_);
+  STORE_FLAG(need_shipping_address_);
+  STORE_FLAG(is_flexible_);
+  STORE_FLAG(send_phone_number_to_provider_);
+  STORE_FLAG(send_email_address_to_provider_);
   STORE_FLAG(has_tip);
   STORE_FLAG(is_recurring);
   END_STORE_FLAGS();
-  store(invoice.currency_, storer);
-  store(invoice.price_parts_, storer);
+  store(currency_, storer);
+  store(price_parts_, storer);
   if (has_tip) {
-    store(invoice.max_tip_amount_, storer);
-    store(invoice.suggested_tip_amounts_, storer);
+    store(max_tip_amount_, storer);
+    store(suggested_tip_amounts_, storer);
   }
   if (is_recurring) {
-    store(invoice.recurring_payment_terms_of_service_url_, storer);
+    store(recurring_payment_terms_of_service_url_, storer);
   }
 }
 
 template <class ParserT>
-void parse(Invoice &invoice, ParserT &parser) {
+void Invoice::parse(ParserT &parser) {
+  using td::parse;
   bool has_tip;
   bool is_recurring;
   BEGIN_PARSE_FLAGS();
-  PARSE_FLAG(invoice.is_test_);
-  PARSE_FLAG(invoice.need_name_);
-  PARSE_FLAG(invoice.need_phone_number_);
-  PARSE_FLAG(invoice.need_email_address_);
-  PARSE_FLAG(invoice.need_shipping_address_);
-  PARSE_FLAG(invoice.is_flexible_);
-  PARSE_FLAG(invoice.send_phone_number_to_provider_);
-  PARSE_FLAG(invoice.send_email_address_to_provider_);
+  PARSE_FLAG(is_test_);
+  PARSE_FLAG(need_name_);
+  PARSE_FLAG(need_phone_number_);
+  PARSE_FLAG(need_email_address_);
+  PARSE_FLAG(need_shipping_address_);
+  PARSE_FLAG(is_flexible_);
+  PARSE_FLAG(send_phone_number_to_provider_);
+  PARSE_FLAG(send_email_address_to_provider_);
   PARSE_FLAG(has_tip);
   PARSE_FLAG(is_recurring);
   END_PARSE_FLAGS();
-  parse(invoice.currency_, parser);
-  parse(invoice.price_parts_, parser);
+  parse(currency_, parser);
+  parse(price_parts_, parser);
   if (has_tip) {
-    parse(invoice.max_tip_amount_, parser);
-    parse(invoice.suggested_tip_amounts_, parser);
+    parse(max_tip_amount_, parser);
+    parse(suggested_tip_amounts_, parser);
   }
   if (is_recurring) {
-    parse(invoice.recurring_payment_terms_of_service_url_, parser);
+    parse(recurring_payment_terms_of_service_url_, parser);
   }
 }
 
 template <class StorerT>
-void store(const InputInvoice &input_invoice, StorerT &storer) {
-  bool has_description = !input_invoice.description_.empty();
-  bool has_photo = !input_invoice.photo_.is_empty();
-  bool has_start_parameter = !input_invoice.start_parameter_.empty();
-  bool has_payload = !input_invoice.payload_.empty();
-  bool has_provider_token = !input_invoice.provider_token_.empty();
-  bool has_provider_data = !input_invoice.provider_data_.empty();
-  bool has_total_amount = input_invoice.total_amount_ != 0;
-  bool has_receipt_message_id = input_invoice.receipt_message_id_.is_valid();
-  bool has_extended_media = !input_invoice.extended_media_.is_empty();
+void InputInvoice::store(StorerT &storer) const {
+  using td::store;
+  bool has_description = !description_.empty();
+  bool has_photo = !photo_.is_empty();
+  bool has_start_parameter = !start_parameter_.empty();
+  bool has_payload = !payload_.empty();
+  bool has_provider_token = !provider_token_.empty();
+  bool has_provider_data = !provider_data_.empty();
+  bool has_total_amount = total_amount_ != 0;
+  bool has_receipt_message_id = receipt_message_id_.is_valid();
+  bool has_extended_media = !extended_media_.is_empty();
   BEGIN_STORE_FLAGS();
   STORE_FLAG(has_description);
   STORE_FLAG(has_photo);
@@ -92,39 +95,40 @@ void store(const InputInvoice &input_invoice, StorerT &storer) {
   STORE_FLAG(has_receipt_message_id);
   STORE_FLAG(has_extended_media);
   END_STORE_FLAGS();
-  store(input_invoice.title_, storer);
+  store(title_, storer);
   if (has_description) {
-    store(input_invoice.description_, storer);
+    store(description_, storer);
   }
   if (has_photo) {
-    store(input_invoice.photo_, storer);
+    store(photo_, storer);
   }
   if (has_start_parameter) {
-    store(input_invoice.start_parameter_, storer);
+    store(start_parameter_, storer);
   }
-  store(input_invoice.invoice_, storer);
+  store(invoice_, storer);
   if (has_payload) {
-    store(input_invoice.payload_, storer);
+    store(payload_, storer);
   }
   if (has_provider_token) {
-    store(input_invoice.provider_token_, storer);
+    store(provider_token_, storer);
   }
   if (has_provider_data) {
-    store(input_invoice.provider_data_, storer);
+    store(provider_data_, storer);
   }
   if (has_total_amount) {
-    store(input_invoice.total_amount_, storer);
+    store(total_amount_, storer);
   }
   if (has_receipt_message_id) {
-    store(input_invoice.receipt_message_id_, storer);
+    store(receipt_message_id_, storer);
   }
   if (has_extended_media) {
-    store(input_invoice.extended_media_, storer);
+    store(extended_media_, storer);
   }
 }
 
 template <class ParserT>
-void parse(InputInvoice &input_invoice, ParserT &parser) {
+void InputInvoice::parse(ParserT &parser) {
+  using td::parse;
   bool has_description;
   bool has_photo;
   bool has_start_parameter;
@@ -157,34 +161,34 @@ void parse(InputInvoice &input_invoice, ParserT &parser) {
     has_receipt_message_id = true;
     has_extended_media = false;
   }
-  parse(input_invoice.title_, parser);
+  parse(title_, parser);
   if (has_description) {
-    parse(input_invoice.description_, parser);
+    parse(description_, parser);
   }
   if (has_photo) {
-    parse(input_invoice.photo_, parser);
+    parse(photo_, parser);
   }
   if (has_start_parameter) {
-    parse(input_invoice.start_parameter_, parser);
+    parse(start_parameter_, parser);
   }
-  parse(input_invoice.invoice_, parser);
+  parse(invoice_, parser);
   if (has_payload) {
-    parse(input_invoice.payload_, parser);
+    parse(payload_, parser);
   }
   if (has_provider_token) {
-    parse(input_invoice.provider_token_, parser);
+    parse(provider_token_, parser);
   }
   if (has_provider_data) {
-    parse(input_invoice.provider_data_, parser);
+    parse(provider_data_, parser);
   }
   if (has_total_amount) {
-    parse(input_invoice.total_amount_, parser);
+    parse(total_amount_, parser);
   }
   if (has_receipt_message_id) {
-    parse(input_invoice.receipt_message_id_, parser);
+    parse(receipt_message_id_, parser);
   }
   if (has_extended_media) {
-    parse(input_invoice.extended_media_, parser);
+    parse(extended_media_, parser);
   }
 }