diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index 587cc6a..d65ba9d 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -674,7 +674,7 @@
 		.irq		= UART1_MINT_RX,
 		.uartclk	= 16000000,
 		.fifosize	= 8,
-		.flags		= ASYNC_BOOT_AUTOCONF,
+		.flags		= UPF_BOOT_AUTOCONF,
 		.ops		= &imx_pops,
 		.line		= 0,
 	},
@@ -690,7 +690,7 @@
 		.irq		= UART2_MINT_RX,
 		.uartclk	= 16000000,
 		.fifosize	= 8,
-		.flags		= ASYNC_BOOT_AUTOCONF,
+		.flags		= UPF_BOOT_AUTOCONF,
 		.ops		= &imx_pops,
 		.line		= 1,
 	},