diff --git a/targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L443xC/TARGET_MTB_ADV_WISE_1510/PinNames.h b/targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L443xC/TARGET_MTB_ADV_WISE_1510/PinNames.h
index e21025bdac..9f9cac5c9e 100644
--- a/targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L443xC/TARGET_MTB_ADV_WISE_1510/PinNames.h
+++ b/targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L443xC/TARGET_MTB_ADV_WISE_1510/PinNames.h
@@ -186,8 +186,16 @@ typedef enum {
   LED2        = GPIO2,
   LED3        = GPIO4,
 
+#ifdef MBED_CONF_TARGET_STDIO_UART_TX
+  STDIO_UART_TX = MBED_CONF_TARGET_STDIO_UART_TX,
+#else
   STDIO_UART_TX = UART3_TX,
+#endif
+#ifdef MBED_CONF_TARGET_STDIO_UART_RX
+  STDIO_UART_RX = MBED_CONF_TARGET_STDIO_UART_RX,
+#else
   STDIO_UART_RX = UART3_RX,
+#endif
 
   SERIAL_TX   = STDIO_UART_TX,
   SERIAL_RX   = STDIO_UART_RX,