diff --git a/testhal/STM32F4xx/UART/main.c b/testhal/STM32F4xx/UART/main.c
index 99237e8ae..5349471ca 100644
--- a/testhal/STM32F4xx/UART/main.c
+++ b/testhal/STM32F4xx/UART/main.c
@@ -158,9 +158,9 @@ int main(void) {
        * handled entirely in background.
        */
       uartStopReceive(&UARTD2);
-      uartStopSend(&UARTD2);
+//      uartStopSend(&UARTD2);
       uartStartReceive(&UARTD2, 16, buffer);
-      uartStartSend(&UARTD2, 16, message);
+//      uartStartSend(&UARTD2, 16, message);
     }
     chThdSleepMilliseconds(500);
   }