diff --git a/autogen/agentchat/contrib/retrieve_user_proxy_agent.py b/autogen/agentchat/contrib/retrieve_user_proxy_agent.py
index 611ee08514..73eb885629 100644
--- a/autogen/agentchat/contrib/retrieve_user_proxy_agent.py
+++ b/autogen/agentchat/contrib/retrieve_user_proxy_agent.py
@@ -89,7 +89,7 @@
 UPDATE_CONTEXT_IN_PROMPT = "you should reply exactly `UPDATE CONTEXT`"
 
 
-@require_optional_import(["chromadb", "ipython"], "retrievechat")
+@require_optional_import(["chromadb", "IPython"], "retrievechat")
 class RetrieveUserProxyAgent(UserProxyAgent):
     """(In preview) The Retrieval-Augmented User Proxy retrieves document chunks based on the embedding
     similarity, and sends them along with the question to the Retrieval-Augmented Assistant