1 files changed, 1 insertions, 1 deletions

diff --git a/bin/arch b/bin/arch
index faaa79a4a..0f8f2f26a 100644
--- a/bin/arch
+++ b/bin/arch
@@ -84,7 +84,7 @@ def main():
     try:
         try:
             mlist = MailList(listname)
-        except MMUnknownListError:
+        except Errors.MMUnknownListError:
             usage(2, 'no such list: ' + listname)
         if mbox is None:
             mbox = os.path.join(mlist.private_archive_file_dir,