diff --git a/scripts/add_brownfield.py b/scripts/add_brownfield.py
index c607132c..82a40e57 100644
--- a/scripts/add_brownfield.py
+++ b/scripts/add_brownfield.py
@@ -14,7 +14,7 @@ import pypsa
 import xarray as xr
 from _helpers import (
     configure_logging,
-    get_snapshots
+    get_snapshots,
     set_scenario_config,
     update_config_from_wildcards,
 )