diff --git a/contrib/pyzfs/libzfs_core/_constants.py b/contrib/pyzfs/libzfs_core/_constants.py
index 50dca67f3a..367ffb63a9 100644
--- a/contrib/pyzfs/libzfs_core/_constants.py
+++ b/contrib/pyzfs/libzfs_core/_constants.py
@@ -95,6 +95,7 @@ zfs_errno = enum_with_offset(1024, [
         'ZFS_ERR_EXPORT_IN_PROGRESS',
         'ZFS_ERR_BOOKMARK_SOURCE_NOT_ANCESTOR',
         'ZFS_ERR_STREAM_TRUNCATED',
+        'ZFS_ERR_STREAM_LARGE_BLOCK_MISMATCH',
         'ZFS_ERR_RESILVER_IN_PROGRESS',
         'ZFS_ERR_REBUILD_IN_PROGRESS',
     ],