diff --git a/ogscm/recipes/ogs.py b/ogscm/recipes/ogs.py
index f1cf574855ed91fab296c2434bed0e7b9852537d..af473f08433dc0d8665ebff33996b91fccd9be2f 100644
--- a/ogscm/recipes/ogs.py
+++ b/ogscm/recipes/ogs.py
@@ -532,9 +532,10 @@ if local_args.ogs != "clean":
             ]
             petsc_configure_opts.extend(petsc_args)
             if "--download-f2cblaslapack" not in local_args.petsc_configure_args:
-                petsc_configure_opts.extend([
-                    "--download-f2cblaslapack=1",
-                ]
+                petsc_configure_opts.extend(
+                    [
+                        "--download-f2cblaslapack=1",
+                    ]
                 )
             Stage0 += generic_autotools(
                 configure_opts=petsc_configure_opts,