diff --git a/python_scripts/run_simstadt_from_python/run_simstadt_workflow.py b/python_scripts/run_simstadt_from_python/run_simstadt_workflow.py
index 2a9134f3a97d573057f611110269cfcb836f8ed6..6bd84c58b9e006f61368f26648b7910934d12c26 100644
--- a/python_scripts/run_simstadt_from_python/run_simstadt_workflow.py
+++ b/python_scripts/run_simstadt_from_python/run_simstadt_workflow.py
@@ -150,7 +150,7 @@ def run_simstadt(simstadt_path: Path, workflow_path:Path , name: str):
     os.chdir(simstadt_path)
     try:
         logging.info("\n# Launching %s:", name)
-        result = subprocess.run(' '.join([simstadt_script(), str(workflow_path)]),
+        result = subprocess.run([simstadt_script(), str(workflow_path)],
                                 text=True,
                                 capture_output=True,
                                 check=True