diff --git a/gplugins/gmeep/write_sparameters_meep_mpi.py b/gplugins/gmeep/write_sparameters_meep_mpi.py
index 0f44d17b..a4090020 100644
--- a/gplugins/gmeep/write_sparameters_meep_mpi.py
+++ b/gplugins/gmeep/write_sparameters_meep_mpi.py
@@ -45,7 +45,7 @@ def write_sparameters_meep_mpi(
     cores: int = core_materials,
     filepath: PathType | None = None,
     dirpath: PathType | None = None,
-    temp_dir: Path|str = temp_dir_default,
+    temp_dir: Path | str = temp_dir_default,
     temp_file_str: str = "write_sparameters_meep_mpi",
     live_output: bool = False,
     overwrite: bool = False,
@@ -176,6 +176,7 @@ def write_sparameters_meep_mpi(
         "from gplugins.gmeep import write_sparameters_meep\n\n",
         "from gdsfactory.read import import_gds\n",
         "from gdsfactory.technology import LayerStack\n\n",
+        "from gdsfactory.config import CONF; CONF.pdk = CONF.pdk or 'generic'\n\n",
         "if __name__ == '__main__':\n",
         f"\twith open(\"{parameters_file}\", 'rb') as inp:\n",
         "\t\tparameters_dict = pickle.load(inp)\n\n",