diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/bot/Ktor/base/AbstractRequestCallFactory.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/bot/Ktor/base/AbstractRequestCallFactory.kt
index c924a84bd6..b843a61d34 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/bot/Ktor/base/AbstractRequestCallFactory.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/bot/Ktor/base/AbstractRequestCallFactory.kt
@@ -5,10 +5,8 @@ import com.github.insanusmokrassar.TelegramBotAPI.requests.abstracts.Request
 import io.ktor.client.HttpClient
 import io.ktor.client.call.HttpClientCall
 import io.ktor.client.call.call
-import io.ktor.client.request.accept
-import io.ktor.client.request.url
-import io.ktor.http.ContentType
-import io.ktor.http.HttpMethod
+import io.ktor.client.request.*
+import io.ktor.http.*
 
 abstract class AbstractRequestCallFactory : KtorCallFactory {
     private val methodsCache: MutableMap<String, String> = mutableMapOf()
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/bot/Ktor/base/MultipartRequestCallFactory.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/bot/Ktor/base/MultipartRequestCallFactory.kt
index 5884104497..3a3ccf97bb 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/bot/Ktor/base/MultipartRequestCallFactory.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/bot/Ktor/base/MultipartRequestCallFactory.kt
@@ -21,14 +21,15 @@ class MultipartRequestCallFactory : AbstractRequestCallFactory() {
                 val params = castedRequest.paramsJson.mapWithCommonValues()
                 for ((key, value) in castedRequest.mediaMap + params) {
                     when (value) {
-                        is MultipartFile -> append(
+                        is MultipartFile -> appendInput(
                             key,
-                            value.file.asInput().readBytes(),
                             Headers.build {
                                 append(HttpHeaders.ContentType, value.mimeType)
                                 append(HttpHeaders.ContentDisposition, "filename=${value.fileId}")
                             }
-                        )
+                        ) {
+                            value.file.asInput()
+                        }
                         is FileId -> append(key, value.fileId)
                         else -> append(key, value.toString())
                     }