diff --git a/codex-rs/mcp-server/src/outgoing_message.rs b/codex-rs/mcp-server/src/outgoing_message.rs
index f408ca0a45..82f64e35c3 100644
--- a/codex-rs/mcp-server/src/outgoing_message.rs
+++ b/codex-rs/mcp-server/src/outgoing_message.rs
@@ -119,9 +119,6 @@ impl OutgoingMessageSender {
             params: Some(params.clone()),
         })
         .await;
-
-        self.send_event_as_notification_new_schema(event, Some(params.clone()))
-            .await;
     }
 
     pub(crate) async fn send_notification(&self, notification: OutgoingNotification) {
@@ -129,19 +126,6 @@ impl OutgoingMessageSender {
         let _ = self.sender.send(outgoing_message).await;
     }
 
-    // should be backwards compatible.
-    // it will replace send_event_as_notification eventually.
-    async fn send_event_as_notification_new_schema(
-        &self,
-        event: &Event,
-        params: Option<serde_json::Value>,
-    ) {
-        let outgoing_message = OutgoingMessage::Notification(OutgoingNotification {
-            method: event.msg.to_string(),
-            params,
-        });
-        let _ = self.sender.send(outgoing_message).await;
-    }
     pub(crate) async fn send_error(&self, id: RequestId, error: JSONRPCErrorError) {
         let outgoing_message = OutgoingMessage::Error(OutgoingError { id, error });
         let _ = self.sender.send(outgoing_message).await;