diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/User.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/User.kt
index 4cd395f902..e19ca3aaca 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/User.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/User.kt
@@ -5,7 +5,7 @@ import kotlinx.serialization.*
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonObjectSerializer
 
-@Serializable
+@Serializable(UserSerializer::class)
 sealed class User : PrivateChat
 
 @Serializable