diff --git a/usart_async/src/bin/main.rs b/usart_async/src/bin/main.rs
index db6a6fb..0e04c7f 100644
--- a/usart_async/src/bin/main.rs
+++ b/usart_async/src/bin/main.rs
@@ -24,7 +24,6 @@ async fn receive_uart(mut uart: Uart<'static, Async>) {
         unwrap!(uart.write(&buf).await);
         unwrap!(uart.write(b"a\r\n").await);
         info!("uart received {}", buf[0]);
-        Timer::after(Duration::from_secs(1)).await;
     }
 }