diff --git a/cores/esp32/esp32-hal-uart.c b/cores/esp32/esp32-hal-uart.c
index 784a97beb7d..e6f554c0c81 100644
--- a/cores/esp32/esp32-hal-uart.c
+++ b/cores/esp32/esp32-hal-uart.c
@@ -435,11 +435,16 @@ uart_t* uartBegin(uint8_t uart_nr, uint32_t baudrate, uint32_t config, int8_t rx
     if (retCode) retCode &= ESP_OK == uart_param_config(uart_nr, &uart_config);
 
     // Is it right or the idea is to swap rx and tx pins? 
-    if (retCode && inverted) {
+    if (retCode) {
+      if (inverted) {
+        // invert signal for both Rx and Tx
+        retCode &= ESP_OK == uart_set_line_inverse(uart_nr, UART_SIGNAL_TXD_INV | UART_SIGNAL_RXD_INV);
+      } else {
         // invert signal for both Rx and Tx
-        retCode &= ESP_OK == uart_set_line_inverse(uart_nr, UART_SIGNAL_TXD_INV | UART_SIGNAL_RXD_INV);    
+        retCode &= ESP_OK == uart_set_line_inverse(uart_nr, UART_SIGNAL_INV_DISABLE);
+      }
     }
-    
+    // if all fine, set internal parameters
     if (retCode) {
         uart->_baudrate = baudrate;
         uart->_config = config;