diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 6a6732b8fcf0..14627f3466d3 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7005,7 +7005,7 @@ struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode,
 
 	if (delalloc_len > 0) {
 		u64 hole_start;
-		u64 hole_len = len;
+		u64 hole_len;
 		const u64 hole_end = extent_map_end(hole_em);
 
 		em = alloc_extent_map();