diff --git a/bob/devtools/scripts/mirror.py b/bob/devtools/scripts/mirror.py
index cdca9a5c29093783a5ad07b552b3801987e3b961..5dded9fb905b5cea50a3fe1db25c3c51c05401a6 100644
--- a/bob/devtools/scripts/mirror.py
+++ b/bob/devtools/scripts/mirror.py
@@ -112,6 +112,7 @@ def mirror(
         dry_run,
         tmpdir,
         patch,
+        checksum,
         ):
     """Mirrors a conda channel to a particular local destination