diff --git a/metagpt/actions/write_teaching_plan.py b/metagpt/actions/write_teaching_plan.py
index 04507fda3..6ea3c3099 100644
--- a/metagpt/actions/write_teaching_plan.py
+++ b/metagpt/actions/write_teaching_plan.py
@@ -35,7 +35,7 @@ class WriteTeachingPlanPart(Action):
             formation=TeachingPlanBlock.FORMATION,
             role=self.prefix,
             statements="\n".join(statements),
-            lesson=self.context,
+            lesson=self.i_context,
             topic=self.topic,
             language=self.language,
         )