diff --git a/src/stacktrace_unwind-inl.h b/src/stacktrace_unwind-inl.h
index 3a4b4c5..5fec1a3 100644
--- a/src/stacktrace_unwind-inl.h
+++ b/src/stacktrace_unwind-inl.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2005 - 2007, Google Inc.
+// Copyright (c) 2023, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@@ -33,8 +33,6 @@
 
 #include <unwind.h>  // ABI defined unwinder
 
-#include <cstdlib>  // for nullptr
-
 #include "stacktrace.h"
 
 _START_GOOGLE_NAMESPACE_