diff --git a/openmc/executor.py b/openmc/executor.py
index 758604c91e..aacc48b3fa 100644
--- a/openmc/executor.py
+++ b/openmc/executor.py
@@ -1,9 +1,9 @@
 from collections.abc import Iterable
 from numbers import Integral
+import os
 import subprocess
 
 import openmc
-from openmc.checkvalue import PathLike
 from .plots import _get_plot_image
 
 
@@ -74,7 +74,7 @@ def _process_CLI_arguments(volume=False, geometry_debug=False, particles=None,
         if event_based:
             args.append('-e')
 
-    if isinstance(restart_file, PathLike.__args__):
+    if isinstance(restart_file, (str, os.PathLike)):
         args += ['-r', str(restart_file)]
 
     if tracks: