diff --git a/downloadmgr/download.py b/downloadmgr/download.py
index bd555f5..a6f9e25 100644
--- a/downloadmgr/download.py
+++ b/downloadmgr/download.py
@@ -87,7 +87,7 @@ and finish_time = start_time"""
 	
 	async def check_download_finished(self, status):
 		s = status
-		if s.totalLength == s.completedLength:
+		if s.totalLength > 0 and s.totalLength == s.completedLength:
 			await self.save_finished_task(s.gid)
 			await self.file_downloaded(s.info.name)
 			await self.remove_task(s.gid)