diff --git a/crates/teloxide-core/src/types.rs b/crates/teloxide-core/src/types.rs
index 643fe086..97bcbf76 100644
--- a/crates/teloxide-core/src/types.rs
+++ b/crates/teloxide-core/src/types.rs
@@ -306,6 +306,11 @@ pub use recipient::*;
 pub use seconds::*;
 pub use user_id::*;
 
+use serde_with::with_prefix;
+
+// Deserialization prefix for giveaway_message_id field used in GiveawayWinners
+with_prefix!(prefix_giveaway_message_id "giveaway_");
+
 /// Converts an `i64` timestamp to a `choro::DateTime`, producing serde error
 /// for invalid timestamps
 pub(crate) fn serde_timestamp<E: serde::de::Error>(
diff --git a/crates/teloxide-core/src/types/giveaway_winners.rs b/crates/teloxide-core/src/types/giveaway_winners.rs
index 9dddc3e6..b5043ad8 100644
--- a/crates/teloxide-core/src/types/giveaway_winners.rs
+++ b/crates/teloxide-core/src/types/giveaway_winners.rs
@@ -1,11 +1,8 @@
 use chrono::{DateTime, Utc};
 use serde::{Deserialize, Serialize};
-use serde_with::with_prefix;
 
 use crate::types::{Chat, MessageId, User};
 
-with_prefix!(prefix_giveaway "giveaway_");
-
 /// This object represents a message about the completion of a giveaway with
 /// public winners.
 #[serde_with::skip_serializing_none]
@@ -15,7 +12,7 @@ pub struct GiveawayWinners {
     pub chat: Chat,
 
     /// Identifier of the messsage with the giveaway in the chat
-    #[serde(flatten, with = "prefix_giveaway")]
+    #[serde(flatten, with = "crate::types::prefix_giveaway_message_id")]
     pub giveaway_message_id: MessageId,
 
     /// Point in time (Unix timestamp) when winners of the giveaway were