diff --git a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/abstracts/InputFile.kt b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/abstracts/InputFile.kt
index 7926308dbf..8b70d3d154 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/abstracts/InputFile.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/abstracts/InputFile.kt
@@ -2,8 +2,10 @@ package com.github.insanusmokrassar.TelegramBotAPI.requests.abstracts
 
 import com.github.insanusmokrassar.TelegramBotAPI.utils.StorageFile
 import kotlinx.serialization.*
+import kotlinx.serialization.internal.StringDescriptor
 import java.io.File
 
+@Serializable(InputFileSerializer::class)
 sealed class InputFile {
     abstract val fileId: String
 }
@@ -12,16 +14,17 @@ sealed class InputFile {
 /**
  * Contains file id or file url
  */
-@Serializable(FileIdSerializer::class)
+@Serializable(InputFileSerializer::class)
 data class FileId(
     override val fileId: String
 ) : InputFile()
 
 fun String.toInputFile(): InputFile = FileId(this)
 
-@Serializer(FileId::class)
-object FileIdSerializer : KSerializer<FileId> {
-    override fun serialize(encoder: Encoder, obj: FileId) = encoder.encodeString(obj.fileId)
+@Serializer(InputFile::class)
+object InputFileSerializer : KSerializer<InputFile> {
+    override val descriptor: SerialDescriptor = StringDescriptor.withName(FileId::class.toString())
+    override fun serialize(encoder: Encoder, obj: InputFile) = encoder.encodeString(obj.fileId)
     override fun deserialize(decoder: Decoder): FileId = FileId(decoder.decodeString())
 }
 
@@ -29,7 +32,7 @@ object FileIdSerializer : KSerializer<FileId> {
 /**
  * Contains info about file for sending
  */
-@Serializable
+@Serializable(InputFileSerializer::class)
 data class MultipartFile (
     val file: StorageFile,
     val mimeType: String = file.contentType,
diff --git a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/chat/modify/SetChatPhoto.kt b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/chat/modify/SetChatPhoto.kt
index 184b344255..212346bf6d 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/chat/modify/SetChatPhoto.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/chat/modify/SetChatPhoto.kt
@@ -13,11 +13,10 @@ import kotlinx.serialization.json.JsonObject
 data class SetChatPhoto (
     @SerialName(chatIdField)
     override val chatId: ChatIdentifier,
-    @Transient
     val photo: MultipartFile = throw IllegalArgumentException("Unfortunately, this type of objects can't be parsed automatically")
 ): ChatRequest, MultipartRequest<Boolean> {
     override fun method(): String = "setChatPhoto"
     override fun resultSerializer(): KSerializer<Boolean> = BooleanSerializer
     override val mediaMap: Map<String, MultipartFile> = mapOf(photoField to photo)
-    override val paramsJson: JsonObject = this.toJson(serializer())
+    override val paramsJson: JsonObject = toJson(serializer())
 }
diff --git a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/Common.kt b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/Common.kt
index 8aa06288d6..59c81efe57 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/Common.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/Common.kt
@@ -184,7 +184,7 @@ const val certificateField = "certificate"
 const val pointField = "point"
 const val xShiftField = "x_shift"
 const val yShiftField = "y_shift"
-const val scaleField = "y_shift"
+const val scaleField = "scale"
 
 
 const val currencyField = "currency"
diff --git a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InlineQueryResult/serializers/InlineQueryResultSerializer.kt b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InlineQueryResult/serializers/InlineQueryResultSerializer.kt
index 62296d41e5..2e6e9736ff 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InlineQueryResult/serializers/InlineQueryResultSerializer.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InlineQueryResult/serializers/InlineQueryResultSerializer.kt
@@ -3,11 +3,12 @@ package com.github.insanusmokrassar.TelegramBotAPI.types.InlineQueries.InlineQue
 import com.github.insanusmokrassar.TelegramBotAPI.types.InlineQueries.InlineQueryResult.*
 import com.github.insanusmokrassar.TelegramBotAPI.types.InlineQueries.InlineQueryResult.abstracts.InlineQueryResult
 import kotlinx.serialization.*
+import kotlinx.serialization.internal.StringDescriptor
 import sun.reflect.generics.reflectiveObjects.NotImplementedException
 
 @Serializer(InlineQueryResult::class)
-object InlineQueryResultSerializer :
-    KSerializer<InlineQueryResult> {
+object InlineQueryResultSerializer : KSerializer<InlineQueryResult> {
+    override val descriptor: SerialDescriptor = StringDescriptor.withName(InlineQueryResult::class.toString())
     override fun serialize(encoder: Encoder, obj: InlineQueryResult) {
         when(obj) {
             is InlineQueryResultArticle -> InlineQueryResultArticle.serializer().serialize(encoder, obj)
diff --git a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InputMessageContentSerializer.kt b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InputMessageContentSerializer.kt
index 2114cea456..77c3fa4486 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InputMessageContentSerializer.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InputMessageContentSerializer.kt
@@ -3,9 +3,11 @@ package com.github.insanusmokrassar.TelegramBotAPI.types.InlineQueries
 import com.github.insanusmokrassar.TelegramBotAPI.types.InlineQueries.InputMessageContent.*
 import com.github.insanusmokrassar.TelegramBotAPI.types.InlineQueries.abstracts.InputMessageContent
 import kotlinx.serialization.*
+import kotlinx.serialization.internal.StringDescriptor
 
 @Serializer(InputMessageContent::class)
 object InputMessageContentSerializer : KSerializer<InputMessageContent> {
+    override val descriptor: SerialDescriptor = StringDescriptor.withName(InputMessageContent::class.toString())
     override fun serialize(encoder: Encoder, obj: InputMessageContent) {
         when (obj) {
             is InputContactMessageContent -> InputContactMessageContent.serializer().serialize(encoder, obj)
diff --git a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaAudio.kt b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaAudio.kt
index 739468c8bb..7d909efd13 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaAudio.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaAudio.kt
@@ -9,7 +9,6 @@ import kotlinx.serialization.*
 
 @Serializable
 data class InputMediaAudio(
-    @Transient
     override val file: InputFile = throw IllegalStateException("Must be created with file"),
     override val caption: String? = null,
     @SerialName(parseModeField)
diff --git a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaSerializer.kt b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaSerializer.kt
index f63bad756b..fd4b3f9266 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaSerializer.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaSerializer.kt
@@ -1,9 +1,11 @@
 package com.github.insanusmokrassar.TelegramBotAPI.types.InputMedia
 
 import kotlinx.serialization.*
+import kotlinx.serialization.internal.StringDescriptor
 
 @Serializer(InputMedia::class)
 object InputMediaSerializer : KSerializer<InputMedia> {
+    override val descriptor: SerialDescriptor = StringDescriptor.withName(InputMedia::class.toString())
     override fun serialize(encoder: Encoder, obj: InputMedia) {
         when (obj) {
             is InputMediaVideo -> InputMediaVideo.serializer().serialize(encoder, obj)
diff --git a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/MediaGroupMemberInputMediaSerializer.kt b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/MediaGroupMemberInputMediaSerializer.kt
index 2eb606f93f..c435bef316 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/MediaGroupMemberInputMediaSerializer.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/MediaGroupMemberInputMediaSerializer.kt
@@ -1,13 +1,19 @@
 package com.github.insanusmokrassar.TelegramBotAPI.types.InputMedia
 
 import kotlinx.serialization.*
+import kotlinx.serialization.internal.StringDescriptor
 
 @Serializer(MediaGroupMemberInputMedia::class)
 object MediaGroupMemberInputMediaSerializer : KSerializer<MediaGroupMemberInputMedia> {
+    override val descriptor: SerialDescriptor = StringDescriptor.withName(MediaGroupMemberInputMedia::class.toString())
     override fun serialize(encoder: Encoder, obj: MediaGroupMemberInputMedia) {
         when (obj) {
             is InputMediaPhoto -> InputMediaPhoto.serializer().serialize(encoder, obj)
             is InputMediaVideo -> InputMediaVideo.serializer().serialize(encoder, obj)
         }
     }
+
+    override fun deserialize(decoder: Decoder): MediaGroupMemberInputMedia {
+        TODO("not implemented")
+    }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/KeyboardMarkupSerializer.kt b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/KeyboardMarkupSerializer.kt
index 97de7e2ef1..d69825d7c2 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/KeyboardMarkupSerializer.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/KeyboardMarkupSerializer.kt
@@ -1,9 +1,11 @@
 package com.github.insanusmokrassar.TelegramBotAPI.types.buttons
 
 import kotlinx.serialization.*
+import kotlinx.serialization.internal.StringDescriptor
 
 @Serializer(KeyboardMarkup::class)
 object KeyboardMarkupSerializer : KSerializer<KeyboardMarkup> {
+    override val descriptor: SerialDescriptor = StringDescriptor.withName(KeyboardMarkup::class.toString())
     override fun serialize(encoder: Encoder, obj: KeyboardMarkup) {
         when(obj) {
             is ForceReply -> ForceReply.serializer().serialize(encoder, obj)
@@ -12,4 +14,8 @@ object KeyboardMarkupSerializer : KSerializer<KeyboardMarkup> {
             is ReplyKeyboardRemove -> ReplyKeyboardRemove.serializer().serialize(encoder, obj)
         }
     }
+
+    override fun deserialize(decoder: Decoder): KeyboardMarkup {
+        TODO("not implemented")
+    }
 }