diff --git a/examples/run_all_model.py b/examples/run_all_model.py
index 93d7ac822..ee98177c2 100644
--- a/examples/run_all_model.py
+++ b/examples/run_all_model.py
@@ -253,7 +253,7 @@ def run(times=1, models=None, exclude=False):
         for i in range(times):
             sys.stderr.write(f"Running the model: {fn} for iteration {i+1}...\n")
             errs = execute(
-                f"{python_path} {env_path / 'src/pyqlib/qlib/workflow/cli.py'} {yaml_path} {fn} {exp_manager}"
+                f"{python_path} {env_path / 'src/pyqlib/qlib/workflow/cli.py'} {yaml_path} {fn} '{exp_manager}'"
             )
             if errs is not None:
                 _errs = errors.get(fn, {})