diff --git a/src/platforms/common/aux_serial.c b/src/platforms/common/aux_serial.c
index bd1f910..7c0787f 100644
--- a/src/platforms/common/aux_serial.c
+++ b/src/platforms/common/aux_serial.c
@@ -79,7 +79,7 @@ void aux_serial_set_encoding(struct usb_cdc_line_coding *coding)
  * Changes USBUSART TX buffer in which data is accumulated from USB.
  * Filled buffer is submitted to DMA for transfer.
  */
-void usbuart_change_dma_tx_buf(void)
+void aux_serial_switch_transmit_buffers(void)
 {
 	/* Select buffer for transmission */
 	char *const tx_buf_ptr = &buf_tx[buf_tx_act_idx * TX_BUF_SIZE];
diff --git a/src/platforms/common/usb_serial.c b/src/platforms/common/usb_serial.c
index 510b6c3..e4ee95c 100644
--- a/src/platforms/common/usb_serial.c
+++ b/src/platforms/common/usb_serial.c
@@ -340,7 +340,7 @@ static void usbuart_usb_out_cb(usbd_device *dev, uint8_t ep)
 		if (tx_trfr_cplt)
 		{
 			tx_trfr_cplt = false;
-			usbuart_change_dma_tx_buf();
+			aux_serial_switch_transmit_buffers();
 
 			/* Enable LED */
 			usbuart_set_led_state(TX_LED_ACT, true);
diff --git a/src/platforms/common/usbuart.h b/src/platforms/common/usbuart.h
index 42c28ef..bf40ae3 100644
--- a/src/platforms/common/usbuart.h
+++ b/src/platforms/common/usbuart.h
@@ -23,7 +23,7 @@
 #include "general.h"
 
 void usbuart_set_led_state(uint8_t ledn, bool state);
-void usbuart_change_dma_tx_buf(void);
+void aux_serial_switch_transmit_buffers(void);
 void debug_uart_run(void);
 
 #define TX_LED_ACT (1 << 0)
diff --git a/src/platforms/stm32/usbuart.c b/src/platforms/stm32/usbuart.c
index 3d098a5..f8d30e9 100644
--- a/src/platforms/stm32/usbuart.c
+++ b/src/platforms/stm32/usbuart.c
@@ -263,7 +263,7 @@ void USBUSART2_ISR(void)
 	 */									\
 	if (buf_tx_act_sz)							\
 	{									\
-		usbuart_change_dma_tx_buf();					\
+		aux_serial_switch_transmit_buffers();					\
 		usbd_ep_nak_set(usbdev, CDCACM_UART_ENDPOINT, 0);		\
 	}									\
 	else									\