diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/base/MultipartRequestCallFactory.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/base/MultipartRequestCallFactory.kt
index f52a9e87b3..0fdcd1c5af 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/base/MultipartRequestCallFactory.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/base/MultipartRequestCallFactory.kt
@@ -17,7 +17,7 @@ class MultipartRequestCallFactory : AbstractRequestCallFactory() {
     ): Any? = (request as? MultipartRequest) ?.let { castedRequest ->
         MultiPartFormDataContent(
             formData {
-                val params = castedRequest.paramsJson.mapWithCommonValues()
+                val params = castedRequest.paramsJson.mapWithCommonValues() - castedRequest.mediaMap.keys
                 for ((key, value) in castedRequest.mediaMap + params) {
                     when (value) {
                         is MultipartFile -> appendInput(
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/chat/modify/SetChatPhoto.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/chat/modify/SetChatPhoto.kt
index be2dbcfc6d..aaf3817a4b 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/chat/modify/SetChatPhoto.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/chat/modify/SetChatPhoto.kt
@@ -13,6 +13,7 @@ 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"