diff --git a/cores/esp32/esp32-hal-uart.c b/cores/esp32/esp32-hal-uart.c
index 19c80e5f..f670550e 100644
--- a/cores/esp32/esp32-hal-uart.c
+++ b/cores/esp32/esp32-hal-uart.c
@@ -164,7 +164,9 @@ static void uartEnableInterrupt(uart_t* uart, uint8_t rxfifo_full_thrhd)
 static void uartDisableInterrupt(uart_t* uart)
 {
     UART_MUTEX_LOCK();
+#if CONFIG_IDF_TARGET_ESP32
     uart->dev->conf1.val = 0;
+#endif
     uart->dev->int_ena.val = 0;
     uart->dev->int_clr.val = 0xffffffff;