--- a/testing/web-platform/tests/tools/wptrunner/wptrunner/testloader.py
+++ b/testing/web-platform/tests/tools/wptrunner/wptrunner/testloader.py
@@ -509,17 +509,17 @@ class TestLoader(object):
             inherit_metadata.append(test_metadata)
             test_metadata = test_metadata.get_test(manifest_test.id)
 
         return wpttest.from_manifest(manifest_test, inherit_metadata, test_metadata)
 
     def load_dir_metadata(self, test_manifest, metadata_path, test_path):
         rv = []
         path_parts = os.path.dirname(test_path).split(os.path.sep)
-        for i in xrange(1,len(path_parts) + 1):
+        for i in xrange(len(path_parts) + 1):
             path = os.path.join(metadata_path, os.path.sep.join(path_parts[:i]), "__dir__.ini")
             if path not in self.directory_manifests:
                 self.directory_manifests[path] = manifestexpected.get_dir_manifest(path,
                                                                                    self.run_info)
             manifest = self.directory_manifests[path]
             if manifest is not None:
                 rv.append(manifest)
         return rv