diff --git a/_schema/tdapi.tl b/_schema/tdapi.tl
index 754b673d8b..de3aae1818 100644
--- a/_schema/tdapi.tl
+++ b/_schema/tdapi.tl
@@ -1,7 +1,7 @@
 // Code generated by ./cmd/dltl, DO NOT EDIT.
 //
 // Source: https://raw.githubusercontent.com/tdlib/td/master/td/generate/scheme/td_api.tl
-// SHA256: aa49d0f4e834c95acbd6e60cbd7940c4ee907c3da622506b5fe0d36df04b1beb
+// SHA256: fcb6a2ad9fc6b974a27aed3ce5737d263ee5e45227ab674586aabd8ae0130c81
 
 double#2210c154 ? = Double;
 
@@ -3090,7 +3090,7 @@ messagePaymentSuccessfulBot#68e13eb9 currency:string total_amount:int53 is_recur
 messageGiftedPremium#78d1d0a gifter_user_id:int53 currency:string amount:int53 cryptocurrency:string cryptocurrency_amount:int64 month_count:int32 sticker:sticker = MessageContent;
 
 //@description A Telegram Premium gift code was created for the user
-//@creator_id Identifier of a chat or a user that created the gift code
+//@creator_id Identifier of a chat or a user that created the gift code; may be null if unknown
 //@is_from_giveaway True, if the gift code was created for a giveaway
 //@is_unclaimed True, if the winner for the corresponding Telegram Premium subscription wasn't chosen
 //@month_count Number of month the Telegram Premium subscription will be active after code activation
@@ -3109,7 +3109,7 @@ messagePremiumGiveawayCreated#270f2c44 = MessageContent;
 messagePremiumGiveaway#4aa0d0b0 parameters:premiumGiveawayParameters winner_count:int32 month_count:int32 sticker:sticker = MessageContent;
 
 //@description A Telegram Premium giveaway has been completed for the chat
-//@giveaway_message_id Identifier of the message with the giveaway, can be an identifier of a deleted message
+//@giveaway_message_id Identifier of the message with the giveaway; can be 0 if the message was deleted
 //@winner_count Number of winners in the giveaway
 //@unclaimed_prize_count Number of undistributed prizes
 messagePremiumGiveawayCompleted#80533949 giveaway_message_id:int53 winner_count:int32 unclaimed_prize_count:int32 = MessageContent;
diff --git a/tdapi/tl_message_content_gen.go b/tdapi/tl_message_content_gen.go
index ef1e10c61b..5a077091cc 100644
--- a/tdapi/tl_message_content_gen.go
+++ b/tdapi/tl_message_content_gen.go
@@ -10872,7 +10872,7 @@ func (m *MessageGiftedPremium) GetSticker() (value Sticker) {
 
 // MessagePremiumGiftCode represents TL type `messagePremiumGiftCode#7a9c468f`.
 type MessagePremiumGiftCode struct {
-	// Identifier of a chat or a user that created the gift code
+	// Identifier of a chat or a user that created the gift code; may be null if unknown
 	CreatorID MessageSenderClass
 	// True, if the gift code was created for a giveaway
 	IsFromGiveaway bool
@@ -11617,7 +11617,7 @@ func (m *MessagePremiumGiveaway) GetSticker() (value Sticker) {
 
 // MessagePremiumGiveawayCompleted represents TL type `messagePremiumGiveawayCompleted#80533949`.
 type MessagePremiumGiveawayCompleted struct {
-	// Identifier of the message with the giveaway, can be an identifier of a deleted message
+	// Identifier of the message with the giveaway; can be 0 if the message was deleted
 	GiveawayMessageID int64
 	// Number of winners in the giveaway
 	WinnerCount int32