diff --git a/metagpt/actions/di/rewrite_code.py b/metagpt/actions/di/rewrite_code.py
index 0b00cd1b5..03831f912 100644
--- a/metagpt/actions/di/rewrite_code.py
+++ b/metagpt/actions/di/rewrite_code.py
@@ -45,7 +45,7 @@ class RewriteCode(Action):
                 task_doc_path="/tmp/task_doc.json"
             )
         """
-        if not design_doc_path or not design_doc_path:
+        if not design_doc_path or not task_doc_path:
             return
 
         code, design_doc, task_doc = await asyncio.gather(