diff --git a/tools/owners b/tools/owners
index 249ea5a..752967b 100755
--- a/tools/owners
+++ b/tools/owners
@@ -1,12 +1,12 @@
-#!/bin/env python3
+#!/usr/bin/env python3
 import argparse
 import json
 import os
 import re
-import yaml
+from typing import Dict, List, Optional, Set, TypedDict
 
+import yaml
 from sh import git  # type: ignore
-from typing import Dict, List, Set, TypedDict, Optional
 from yaml.loader import SafeLoader
 
 # A list of Gerrit users (email addresses).
@@ -14,6 +14,7 @@
 #   results in a None type for the value.
 UsersList = Optional[List[str]]
 
+
 # A YAML node with an extra line number.
 class NumberedNode(TypedDict):
     line_number: int
@@ -67,8 +68,6 @@
             .splitlines()
         )
 
-        root_owners = owners[""]
-
         self.owners: Set[str] = set()
         self.reviewers: Set[str] = set()