diff --git a/tubesync/sync/hooks.py b/tubesync/sync/hooks.py
index b03f7128..3c506eb7 100644
--- a/tubesync/sync/hooks.py
+++ b/tubesync/sync/hooks.py
@@ -116,6 +116,7 @@ def yt_dlp_progress_hook(event):
             pass
         if fragment_index > 0 and fragment_count > 0:
             percent = round(100 * fragment_index / fragment_count)
+            percent_str = f'{percent}%'
         elif downloaded_bytes > 0 and total_bytes > 0:
             percent = round(100 * downloaded_bytes / total_bytes)
         if percent and (status.next_progress() < percent) and (0 == percent % 5):