diff --git a/telecup_cli.py b/telecup_cli.py
index 5aa35a3..3814074 100644
--- a/telecup_cli.py
+++ b/telecup_cli.py
@@ -264,6 +264,7 @@ async def download_part(client: TelegramClient, dest: typing.BinaryIO, dInfo: Do
                 f"{dInfo.part_info['part']}p {format_file_size(totalBytesDownloaded)}b {(time.time() - lastRealTimeMeasurement):.3f}s\t",
                 nl=False, err=True
             )
+    writeBuffer(buffer)
 
 
 async def download_file(client: TelegramClient, dest: typing.BinaryIO, fileInfo: dict, dialog: str):