diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 89d66c70d828..6db1661a5625 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -1443,7 +1443,6 @@ static struct acpi_driver sony_nc_driver = {
 #define SONYPI_DEVICE_TYPE1	0x00000001
 #define SONYPI_DEVICE_TYPE2	0x00000002
 #define SONYPI_DEVICE_TYPE3	0x00000004
-#define SONYPI_DEVICE_TYPE4	0x00000008
 
 #define SONYPI_TYPE1_OFFSET	0x04
 #define SONYPI_TYPE2_OFFSET	0x12