diff --git a/corrlib/meas_io.py b/corrlib/meas_io.py
index 82f2e7d..f4e8a83 100644
--- a/corrlib/meas_io.py
+++ b/corrlib/meas_io.py
@@ -82,6 +82,7 @@ def write_measurement(path: Path, ensemble: str, measurement: dict[str, dict[str
                     # Temporary solution
                     parameters = {}
                     parameters["rand"] = {}
+                    parameters["rw_fcts"] = [{}]
                     for nrw in range(1):
                         if "nsrc" not in parameters["rw_fcts"][nrw]:
                             parameters["rw_fcts"][nrw]["nsrc"] = 1
@@ -91,7 +92,6 @@ def write_measurement(path: Path, ensemble: str, measurement: dict[str, dict[str
                             parameters["rw_fcts"][nrw]["np"] = "None"
                         if "irp" not in parameters["rw_fcts"][nrw]:
                             parameters["rw_fcts"][nrw]["irp"] = "None"
-                    # raise Exception("Need parameter file for this code!")
                 pars = {}
                 subkeys = []
                 for i in range(len(parameters["rw_fcts"])):
diff --git a/corrlib/toml.py b/corrlib/toml.py
index f0ba525..eb40d5a 100644
--- a/corrlib/toml.py
+++ b/corrlib/toml.py
@@ -202,7 +202,7 @@ def import_toml(path: Path, file: str, copy_file: bool=True) -> None:
                     # Temporary solution
                     parameters = {}
                     parameters["rand"] = {}
-                    parameters["rw_fcts"] = []
+                    parameters["rw_fcts"] = [{}]
                     for nrw in range(1):
                         if "nsrc" not in parameters["rw_fcts"][nrw]:
                             parameters["rw_fcts"][nrw]["nsrc"] = 1