diff --git a/marginaltool b/marginaltool
index 4d27465..6eac1c2 100755
--- a/marginaltool
+++ b/marginaltool
@@ -28,9 +28,9 @@ def init(args):
     match args.engine:
         case 'file':
             if not args.keyfile:
-                args.keyfile = config.get(args.url, 'keyfile', fallback=None)
+                args.keyfile = config.get(args.url, 'keyfile')
             if not args.certfile:
-                args.certfile = config.get(args.url, 'certfile', fallback=None)
+                args.certfile = config.get(args.url, 'certfile')
             if not args.keyfile or not args.certfile:
                 raise Exception('key or certificate file not specified')
             args.cert = ''.join(line.strip() for line in open(args.certfile) if not line.startswith('-----'))