diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c
index 96958ca474bd..073829be45d1 100644
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -114,7 +114,8 @@ static int sb_write_pointer(struct block_device *bdev, struct blk_zone *zones,
 			super[i] = page_address(page[i]);
 		}
 
-		if (super[0]->generation > super[1]->generation)
+		if (btrfs_super_generation(super[0]) >
+		    btrfs_super_generation(super[1]))
 			sector = zones[1].start;
 		else
 			sector = zones[0].start;