diff --git a/arch/x86/boot/early_serial_console.c b/arch/x86/boot/early_serial_console.c
index 5df2869c874b..790586daec83 100644
--- a/arch/x86/boot/early_serial_console.c
+++ b/arch/x86/boot/early_serial_console.c
@@ -2,8 +2,6 @@
 
 #define DEFAULT_SERIAL_PORT 0x3f8 /* ttyS0 */
 
-#define XMTRDY          0x20
-
 #define DLAB		0x80
 
 #define TXR             0       /*  Transmit register (WRITE) */