diff --git a/ahserver/filedownload.py b/ahserver/filedownload.py
index 20c0eaf..97c7ade 100644
--- a/ahserver/filedownload.py
+++ b/ahserver/filedownload.py
@@ -60,7 +60,8 @@ async def path_download(request, kw, *params):
 	fp = fs.realPath(path)
 	return await file_download(request, fp)
 
-rf = RegisterFunction('download_path', path_download)
+rf = RegisterFunction()
+rf.register('download_path', path_download)