diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 97f0d91cda07..c541183e3d22 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -672,7 +672,7 @@ static noinline int __cow_file_range_inline(struct btrfs_inode *inode,
 	 * And at reserve time, it's always aligned to page size, so
 	 * just free one page here.
 	 */
-	btrfs_qgroup_free_data(inode, NULL, 0, PAGE_SIZE, NULL);
+	btrfs_qgroup_free_data(inode, NULL, 0, fs_info->sectorsize, NULL);
 	btrfs_free_path(path);
 	btrfs_end_transaction(trans);
 	return ret;