diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
index dd98509f52e5..7df687822634 100644
--- a/drivers/tty/serial/sccnxp.c
+++ b/drivers/tty/serial/sccnxp.c
@@ -468,8 +468,7 @@ static void sccnxp_handle_tx(struct uart_port *port)
 			break;
 
 		sccnxp_port_write(port, SCCNXP_THR_REG, xmit->buf[xmit->tail]);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		port->icount.tx++;
+		uart_xmit_advance(port, 1);
 	}
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)