diff --git a/src/regex_lookahead.cpp b/src/regex_lookahead.cpp
index 76e2990..e36cd05 100644
--- a/src/regex_lookahead.cpp
+++ b/src/regex_lookahead.cpp
@@ -1,10 +1,4 @@
-/*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree.
- */
+// (c) Meta Platforms, Inc. and affiliates. Confidential and proprietary.
 
 // This file contains the implementation of create_regex with lookahead support
 
@@ -12,7 +6,6 @@
 #include <pytorch/tokenizers/regex.h>
 #include <pytorch/tokenizers/std_regex.h>
 
-#include <iostream>
 #include <memory>
 
 namespace tokenizers {
diff --git a/src/tiktoken.cpp b/src/tiktoken.cpp
index e5f5e90..a91ef43 100644
--- a/src/tiktoken.cpp
+++ b/src/tiktoken.cpp
@@ -28,7 +28,6 @@
 #include <pytorch/tokenizers/base64.h>
 #include <pytorch/tokenizers/tiktoken.h>
 #include <algorithm>
-#include <cinttypes>
 #include <fstream>
 #include <limits>
 #include <unordered_set>
diff --git a/test/test_regex.cpp b/test/test_regex.cpp
index fa396c1..1fc70f0 100644
--- a/test/test_regex.cpp
+++ b/test/test_regex.cpp
@@ -9,7 +9,6 @@
 #include <gtest/gtest.h>
 
 #include "pytorch/tokenizers/pcre2_regex.h"
-#include "pytorch/tokenizers/re2_regex.h"
 #include "pytorch/tokenizers/regex.h"
 
 using namespace tokenizers;