diff --git a/docs/en/learn/a2ui.mdx b/docs/en/learn/a2ui.mdx
index 1d5e6b9f9..c34dd4b8e 100644
--- a/docs/en/learn/a2ui.mdx
+++ b/docs/en/learn/a2ui.mdx
@@ -38,7 +38,7 @@ agent = Agent(
     llm="gpt-4o",
     a2a=A2AServerConfig(
         url="https://your-server.com",
-        extensions=[A2UIServerExtension()],
+        server_extensions=[A2UIServerExtension()],
     ),
 )
 ```
@@ -69,7 +69,7 @@ agent = Agent(
     llm="gpt-4o",
     a2a=A2AClientConfig(
         endpoint="https://dashboard-agent.example.com/.well-known/agent-card.json",
-        extensions=[A2UIClientExtension()],
+        client_extensions=[A2UIClientExtension()],
     ),
 )
 ```