diff --git a/pki/fillins/net_errors.h b/pki/fillins/net_errors.h
deleted file mode 100644
index 2955888..0000000
--- a/pki/fillins/net_errors.h
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright 2023 The Chromium Authors
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BSSL_FILLINS_NET_ERRORS_H
-#define BSSL_FILLINS_NET_ERRORS_H
-
-#include <openssl/base.h>
-
-namespace bssl {
-
-enum Error {
-  OK = 0,
-};
-
-}  // namespace bssl
-
-#endif  // BSSL_FILLINS_NET_ERRORS_H
diff --git a/pki/path_builder.cc b/pki/path_builder.cc
index affaf25..764a80b 100644
--- a/pki/path_builder.cc
+++ b/pki/path_builder.cc
@@ -10,7 +10,6 @@
 #include <unordered_set>
 
 #include "fillins/log.h"
-#include "fillins/net_errors.h"
 
 #include "cert_issuer_source.h"
 #include "certificate_policies.h"
diff --git a/pki/path_builder_pkits_unittest.cc b/pki/path_builder_pkits_unittest.cc
index b797cd4..153ce14 100644
--- a/pki/path_builder_pkits_unittest.cc
+++ b/pki/path_builder_pkits_unittest.cc
@@ -7,7 +7,6 @@
 #include <cstdint>
 
 #include "fillins/log.h"
-#include "fillins/net_errors.h"
 
 #include "cert_issuer_source_static.h"
 #include "common_cert_errors.h"