diff --git a/contrib/pyzfs/libzfs_core/_constants.py b/contrib/pyzfs/libzfs_core/_constants.py
index 3273652f758a..98a501ef40e2 100644
--- a/contrib/pyzfs/libzfs_core/_constants.py
+++ b/contrib/pyzfs/libzfs_core/_constants.py
@@ -105,7 +105,7 @@ def enum(*sequential, **named):
 )
 # 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