diff --git a/papers/commands/open_cmd.py b/papers/commands/open_cmd.py
index 26623d2..0687b40 100644
--- a/papers/commands/open_cmd.py
+++ b/papers/commands/open_cmd.py
@@ -17,7 +17,7 @@ def parser(subparsers):
 
 
 def command(ui, with_command, reference):
-    rp = repo.Repository.from_directory(config)
+    rp = repo.Repository(config())
     key = parse_reference(ui, rp, reference)
     paper = rp.get_paper(key)
     if with_command is None: