diff --git a/Lib/packaging/tests/test_command_build_ext.py b/Lib/packaging/tests/test_command_build_ext.py
index 161b00081dd..9a00c116a57 100644
--- a/Lib/packaging/tests/test_command_build_ext.py
+++ b/Lib/packaging/tests/test_command_build_ext.py
@@ -150,7 +150,8 @@ class BuildExtTestCase(support.TempdirManager,
         cmd = build_ext(dist)
         cmd.library_dirs = 'my_lib_dir%sother_lib_dir' % os.pathsep
         cmd.finalize_options()
-        self.assertEqual(cmd.library_dirs, ['my_lib_dir', 'other_lib_dir'])
+        self.assertIn('my_lib_dir', cmd.library_dirs)
+        self.assertIn('other_lib_dir', cmd.library_dirs)
 
         # make sure rpath is turned into a list
         # if it's a string