diff --git a/include/block/block.h b/include/block/block.h
index 124ad40809..37c9de7446 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -143,7 +143,6 @@ typedef struct HDGeometry {
 
 #define BDRV_SECTOR_BITS   9
 #define BDRV_SECTOR_SIZE   (1ULL << BDRV_SECTOR_BITS)
-#define BDRV_SECTOR_MASK   ~(BDRV_SECTOR_SIZE - 1)
 
 #define BDRV_REQUEST_MAX_SECTORS MIN(SIZE_MAX >> BDRV_SECTOR_BITS, \
                                      INT_MAX >> BDRV_SECTOR_BITS)
@@ -195,7 +194,6 @@ typedef struct HDGeometry {
 #define BDRV_BLOCK_ALLOCATED    0x10
 #define BDRV_BLOCK_EOF          0x20
 #define BDRV_BLOCK_RECURSE      0x40
-#define BDRV_BLOCK_OFFSET_MASK  BDRV_SECTOR_MASK
 
 typedef QSIMPLEQ_HEAD(BlockReopenQueue, BlockReopenQueueEntry) BlockReopenQueue;
 
diff --git a/migration/block.c b/migration/block.c
index 0de9d84198..8e49382070 100644
--- a/migration/block.c
+++ b/migration/block.c
@@ -906,7 +906,7 @@ static int block_load(QEMUFile *f, void *opaque, int version_id)
     do {
         addr = qemu_get_be64(f);
 
-        flags = addr & ~BDRV_SECTOR_MASK;
+        flags = addr & (BDRV_SECTOR_SIZE - 1);
         addr >>= BDRV_SECTOR_BITS;
 
         if (flags & BLK_MIG_FLAG_DEVICE_BLOCK) {