diff --git a/metagpt/roles/ml_engineer.py b/metagpt/roles/ml_engineer.py
index 5120a9011..f5bb559e1 100644
--- a/metagpt/roles/ml_engineer.py
+++ b/metagpt/roles/ml_engineer.py
@@ -128,7 +128,7 @@ class MLEngineer(Role):
             if not self.use_tools or self.plan.current_task.task_type == "":
                 # code = "print('abc')"
                 code = await WriteCodeByGenerate().run(
-                    context=context, plan=self.plan, task_guide=task_guide
+                    context=context, plan=self.plan, task_guide=task_guide, temperature=0.0
                 )
                 cause_by = WriteCodeByGenerate
             else: