diff --git a/youtube_dl/FileDownloader.py b/youtube_dl/FileDownloader.py
index 706592988..d6673fd3a 100644
--- a/youtube_dl/FileDownloader.py
+++ b/youtube_dl/FileDownloader.py
@@ -398,6 +398,7 @@ class FileDownloader(object):
             self._hook_progress({
                 'filename': filename,
                 'status': 'finished',
+                'total_bytes': os.path.getsize(encodeFilename(filename)),
             })
             return True