diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 0a868118cf06..d42f826a8ab9 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -17,7 +17,6 @@
  * James McMechan
  */
 
-#define MAJOR_NR UBD_MAJOR
 #define UBD_SHIFT 4
 
 #include "linux/kernel.h"
@@ -115,7 +114,7 @@ static struct block_device_operations ubd_blops = {
 };
 
 /* Protected by ubd_lock */
-static int fake_major = MAJOR_NR;
+static int fake_major = UBD_MAJOR;
 static struct gendisk *ubd_gendisk[MAX_DEV];
 static struct gendisk *fake_gendisk[MAX_DEV];
 
@@ -299,7 +298,7 @@ static int ubd_setup_common(char *str, int *index_out, char **error_out)
 		}
 
 		mutex_lock(&ubd_lock);
-		if(fake_major != MAJOR_NR){
+		if (fake_major != UBD_MAJOR) {
 			*error_out = "Can't assign a fake major twice";
 			goto out1;
 		}
@@ -818,13 +817,13 @@ static int ubd_disk_register(int major, u64 size, int unit,
 	disk->first_minor = unit << UBD_SHIFT;
 	disk->fops = &ubd_blops;
 	set_capacity(disk, size / 512);
-	if(major == MAJOR_NR)
+	if (major == UBD_MAJOR)
 		sprintf(disk->disk_name, "ubd%c", 'a' + unit);
 	else
 		sprintf(disk->disk_name, "ubd_fake%d", unit);
 
 	/* sysfs register (not for ide fake devices) */
-	if (major == MAJOR_NR) {
+	if (major == UBD_MAJOR) {
 		ubd_devs[unit].pdev.id   = unit;
 		ubd_devs[unit].pdev.name = DRIVER_NAME;
 		ubd_devs[unit].pdev.dev.release = ubd_device_release;
@@ -871,13 +870,13 @@ static int ubd_add(int n, char **error_out)
 	ubd_dev->queue->queuedata = ubd_dev;
 
 	blk_queue_max_hw_segments(ubd_dev->queue, MAX_SG);
-	err = ubd_disk_register(MAJOR_NR, ubd_dev->size, n, &ubd_gendisk[n]);
+	err = ubd_disk_register(UBD_MAJOR, ubd_dev->size, n, &ubd_gendisk[n]);
 	if(err){
 		*error_out = "Failed to register device";
 		goto out_cleanup;
 	}
 
-	if(fake_major != MAJOR_NR)
+	if (fake_major != UBD_MAJOR)
 		ubd_disk_register(fake_major, ubd_dev->size, n,
 				  &fake_gendisk[n]);
 
@@ -1059,10 +1058,10 @@ static int __init ubd_init(void)
 	char *error;
 	int i, err;
 
-	if (register_blkdev(MAJOR_NR, "ubd"))
+	if (register_blkdev(UBD_MAJOR, "ubd"))
 		return -1;
 
-	if (fake_major != MAJOR_NR) {
+	if (fake_major != UBD_MAJOR) {
 		char name[sizeof("ubd_nnn\0")];
 
 		snprintf(name, sizeof(name), "ubd_%d", fake_major);