diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index b1ab088fbe6e..bb6aca07ab56 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -47,7 +47,7 @@
 #define RZN1_UART_xDMACR_DMA_EN		BIT(0)
 #define RZN1_UART_xDMACR_1_WORD_BURST	(0 << 1)
 #define RZN1_UART_xDMACR_4_WORD_BURST	(1 << 1)
-#define RZN1_UART_xDMACR_8_WORD_BURST	(3 << 1)
+#define RZN1_UART_xDMACR_8_WORD_BURST	(2 << 1)
 #define RZN1_UART_xDMACR_BLK_SZ(x)	((x) << 3)
 
 /* Quirks */