diff --git a/targets/TARGET_STM/serial_api.c b/targets/TARGET_STM/serial_api.c
index b7ce63f546..9875c6ed5e 100644
--- a/targets/TARGET_STM/serial_api.c
+++ b/targets/TARGET_STM/serial_api.c
@@ -205,6 +205,7 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
 
     uint8_t stdio_config = false;
 
+#if defined(MBED_CONF_TARGET_CONSOLE_UART)
     if ((tx == CONSOLE_TX) || (rx == CONSOLE_RX)) {
         stdio_config = true;
     } else {
@@ -212,6 +213,7 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
             error("Error: new serial object is using same UART as STDIO");
         }
     }
+#endif
 
     const serial_pinmap_t explicit_uart_pinmap = {peripheral, tx, tx_function, rx, rx_function, stdio_config};