diff --git a/bind/G4Calo.py b/bind/G4Calo.py
index f78d3d3..77e5b75 100644
--- a/bind/G4Calo.py
+++ b/bind/G4Calo.py
@@ -52,10 +52,10 @@ def _run_mini_batch(
     with TempFileManager() as tfm:
         tfm.dump_input(to_process)
         if silent:
-            subprocess.run(["python", "G4Calo_exec.py", tfm.input_file, tfm.output_file], 
+            subprocess.run(["G4Calo_exec.py", tfm.input_file, tfm.output_file], 
                            stdout=subprocess.DEVNULL)#, stderr=subprocess.DEVNULL)
         else:
-            subprocess.run(["python", "G4Calo_exec.py", tfm.input_file, tfm.output_file])
+            subprocess.run(["G4Calo_exec.py", tfm.input_file, tfm.output_file])
         data = tfm.read_output()
         if return_geometry:
             return data['df'], data['geometry']