diff --git a/contrib/pyzfs/libzfs_core/_constants.py b/contrib/pyzfs/libzfs_core/_constants.py
index 7ee2ef87df..2db2bba8a8 100644
--- a/contrib/pyzfs/libzfs_core/_constants.py
+++ b/contrib/pyzfs/libzfs_core/_constants.py
@@ -106,7 +106,7 @@ zfs_errno = enum_with_offset(1024, [
 )
 # compat before we used the enum helper for these values
 ZFS_ERR_CHECKPOINT_EXISTS = zfs_errno.ZFS_ERR_CHECKPOINT_EXISTS
-assert(ZFS_ERR_CHECKPOINT_EXISTS == 1024)
+assert (ZFS_ERR_CHECKPOINT_EXISTS == 1024)
 ZFS_ERR_DISCARDING_CHECKPOINT = zfs_errno.ZFS_ERR_DISCARDING_CHECKPOINT
 ZFS_ERR_NO_CHECKPOINT = zfs_errno.ZFS_ERR_NO_CHECKPOINT
 ZFS_ERR_DEVRM_IN_PROGRESS = zfs_errno.ZFS_ERR_DEVRM_IN_PROGRESS