diff --git a/drivers/console/uart_mcumgr.c b/drivers/console/uart_mcumgr.c
index 30b0c7be7180a9..2b068e6810c4b0 100644
--- a/drivers/console/uart_mcumgr.c
+++ b/drivers/console/uart_mcumgr.c
@@ -228,16 +228,9 @@ static void uart_mcumgr_setup(const struct device *uart)
 #else
 static void uart_mcumgr_setup(const struct device *uart)
 {
-	uint8_t c;
-
 	uart_irq_rx_disable(uart);
 	uart_irq_tx_disable(uart);
 
-	/* Drain the fifo */
-	while (uart_fifo_read(uart, &c, 1)) {
-		continue;
-	}
-
 	uart_irq_callback_set(uart, uart_mcumgr_isr);
 
 	uart_irq_rx_enable(uart);