diff --git a/util/icat_db_generator.py b/util/icat_db_generator.py
index 77d91425..592fcd0f 100644
--- a/util/icat_db_generator.py
+++ b/util/icat_db_generator.py
@@ -764,9 +764,8 @@ def generate(self):
         timer = datetime.datetime.now()
         with multiprocessing.get_context("spawn").Pool() as pool:
             pool.map(
-                DatafileParameterGenerator.generate_datafile_parameter.range(
-                    1, self.amount
-                )
+                DatafileParameterGenerator.generate_datafile_parameter,
+                range(1, self.amount),
             )
         # for i in range(1, self.amount):
         #    timer2 = datetime.datetime.now()